2021-12-30 19:03:00

55 files changed, 1873 insertions, 327 deletions

diff --git a/context/data/scite/context/lexers/data/scite-context-data-context.lua b/context/data/scite/context/lexers/data/scite-context-data-context.lua
index 76024190b..29a69d871 100644
--- a/context/data/scite/context/lexers/data/scite-context-data-context.lua
+++ b/context/data/scite/context/lexers/data/scite-context-data-context.lua
@@ -1,4 +1,4 @@
 return {
- ["constants"]={ "zerocount", "minusone", "minustwo", "plusone", "plustwo", "plusthree", "plusfour", "plusfive", "plussix", "plusseven", "pluseight", "plusnine", "plusten", "pluseleven", "plustwelve", "plussixteen", "plusfifty", "plushundred", "plusonehundred", "plustwohundred", "plusfivehundred", "plusthousand", "plustenthousand", "plustwentythousand", "medcard", "maxcard", "maxcardminusone", "zeropoint", "onepoint", "halfapoint", "onebasepoint", "maxcount", "maxdimen", "scaledpoint", "thousandpoint", "points", "halfpoint", "zeroskip", "zeromuskip", "onemuskip", "pluscxxvii", "pluscxxviii", "pluscclv", "pluscclvi", "normalpagebox", "binaryshiftedten", "binaryshiftedtwenty", "binaryshiftedthirty", "directionlefttoright", "directionrighttoleft", "endoflinetoken", "outputnewlinechar", "emptytoks", "empty", "undefined", "prerollrun", "voidbox", "emptybox", "emptyvbox", "emptyhbox", "bigskipamount", "medskipamount", "smallskipamount", "fmtname", "fmtversion", "texengine", "texenginename", "texengineversion", "texenginefunctionality", "luatexengine", "pdftexengine", "xetexengine", "unknownengine", "contextformat", "contextversion", "contextlmtxmode", "contextmark", "mksuffix", "activecatcode", "bgroup", "egroup", "endline", "conditionaltrue", "conditionalfalse", "attributeunsetvalue", "statuswrite", "uprotationangle", "rightrotationangle", "downrotationangle", "leftrotationangle", "inicatcodes", "ctxcatcodes", "texcatcodes", "notcatcodes", "txtcatcodes", "vrbcatcodes", "prtcatcodes", "nilcatcodes", "luacatcodes", "tpacatcodes", "tpbcatcodes", "xmlcatcodes", "ctdcatcodes", "rlncatcodes", "escapecatcode", "begingroupcatcode", "endgroupcatcode", "mathshiftcatcode", "alignmentcatcode", "endoflinecatcode", "parametercatcode", "superscriptcatcode", "subscriptcatcode", "ignorecatcode", "spacecatcode", "lettercatcode", "othercatcode", "activecatcode", "commentcatcode", "invalidcatcode", "tabasciicode", "newlineasciicode", "formfeedasciicode", "endoflineasciicode", "endoffileasciicode", "commaasciicode", "spaceasciicode", "periodasciicode", "hashasciicode", "dollarasciicode", "commentasciicode", "ampersandasciicode", "colonasciicode", "backslashasciicode", "circumflexasciicode", "underscoreasciicode", "leftbraceasciicode", "barasciicode", "rightbraceasciicode", "tildeasciicode", "delasciicode", "leftparentasciicode", "rightparentasciicode", "lessthanasciicode", "morethanasciicode", "doublecommentsignal", "atsignasciicode", "exclamationmarkasciicode", "questionmarkasciicode", "doublequoteasciicode", "singlequoteasciicode", "forwardslashasciicode", "primeasciicode", "hyphenasciicode", "percentasciicode", "leftbracketasciicode", "rightbracketasciicode", "hsizefrozenparcode", "skipfrozenparcode", "hangfrozenparcode", "indentfrozenparcode", "parfillfrozenparcode", "adjustfrozenparcode", "protrudefrozenparcode", "tolerancefrozenparcode", "stretchfrozenparcode", "loosenessfrozenparcode", "lastlinefrozenparcode", "linepenaltyfrozenparcode", "clubpenaltyfrozenparcode", "widowpenaltyfrozenparcode", "displaypenaltyfrozenparcode", "brokenpenaltyfrozenparcode", "demeritsfrozenparcode", "shapefrozenparcode", "linefrozenparcode", "hyphenationfrozenparcode", "shapingpenaltiesfrozenparcode", "orphanpenaltyfrozenparcode", "allfrozenparcode", "activemathcharcode", "activetabtoken", "activeformfeedtoken", "activeendoflinetoken", "batchmodecode", "nonstopmodecode", "scrollmodecode", "errorstopmodecode", "bottomlevelgroupcode", "simplegroupcode", "hboxgroupcode", "adjustedhboxgroupcode", "vboxgroupcode", "vtopgroupcode", "aligngroupcode", "noaligngroupcode", "outputgroupcode", "mathgroupcode", "discretionarygroupcode", "insertgroupcode", "vadjustgroupcode", "vcentergroupcode", "mathabovegroupcode", "mathchoicegroupcode", "alsosimplegroupcode", "semisimplegroupcode", "mathshiftgroupcode", "mathleftgroupcode", "localboxgroupcode", "splitoffgroupcode", "splitkeepgroupcode", "preamblegroupcode", "alignsetgroupcode", "finrowgroupcode", "discretionarygroupcode", "markautomigrationcode", "insertautomigrationcode", "adjustautomigrationcode", "preautomigrationcode", "postautomigrationcode", "charnodecode", "hlistnodecode", "vlistnodecode", "rulenodecode", "insertnodecode", "marknodecode", "adjustnodecode", "ligaturenodecode", "discretionarynodecode", "whatsitnodecode", "mathnodecode", "gluenodecode", "kernnodecode", "penaltynodecode", "unsetnodecode", "mathsnodecode", "charifcode", "catifcode", "numifcode", "dimifcode", "oddifcode", "vmodeifcode", "hmodeifcode", "mmodeifcode", "innerifcode", "voidifcode", "hboxifcode", "vboxifcode", "xifcode", "eofifcode", "trueifcode", "falseifcode", "caseifcode", "definedifcode", "csnameifcode", "fontcharifcode", "overrulemathcontrolcode", "underrulemathcontrolcode", "radicalrulemathcontrolcode", "fractionrulemathcontrolcode", "accentskewhalfmathcontrolcode", "accentskewapplymathcontrolcode", "accentitalickernmathcontrolcode", "delimiteritalickernmathcontrolcode", "noorditalickernmathcontrolcode", "charitalicwidthmathcontrolcode", "charitalicnoreboxmathcontrolcode", "boxednoitalickernmathcontrolcode", "nostaircasekernmathcontrolcode", "textitalickernmathcontrolcode", "noscriptitalickernmathcontrolcode", "italicshapekernmathcontrolcode", "noligaturingglyphoptioncode", "nokerningglyphoptioncode", "noexpansionglyphoptioncode", "noprotrusionglyphoptioncode", "noleftkerningglyphoptioncode", "noleftligaturingglyphoptioncode", "norightkerningglyphoptioncode", "norightligaturingglyphoptioncode", "noitaliccorrectionglyphoptioncode", "normalparcontextcode", "vmodeparcontextcode", "vboxparcontextcode", "vtopparcontextcode", "vcenterparcontextcode", "vadjustparcontextcode", "insertparcontextcode", "outputparcontextcode", "alignparcontextcode", "noalignparcontextcode", "spanparcontextcode", "resetparcontextcode", "fontslantperpoint", "fontinterwordspace", "fontinterwordstretch", "fontinterwordshrink", "fontexheight", "fontemwidth", "fontextraspace", "slantperpoint", "mathexheight", "mathemwidth", "interwordspace", "interwordstretch", "interwordshrink", "exheight", "emwidth", "extraspace", "mathaxisheight", "muquad", "startmode", "stopmode", "startnotmode", "stopnotmode", "startmodeset", "stopmodeset", "doifmode", "doifelsemode", "doifmodeelse", "doifnotmode", "startmodeset", "stopmodeset", "startallmodes", "stopallmodes", "startnotallmodes", "stopnotallmodes", "doifallmodes", "doifelseallmodes", "doifallmodeselse", "doifnotallmodes", "startenvironment", "stopenvironment", "environment", "startcomponent", "stopcomponent", "component", "startproduct", "stopproduct", "product", "startproject", "stopproject", "project", "starttext", "stoptext", "startnotext", "stopnotext", "startdocument", "stopdocument", "documentvariable", "unexpandeddocumentvariable", "setupdocument", "presetdocument", "doifelsedocumentvariable", "doifdocumentvariableelse", "doifdocumentvariable", "doifnotdocumentvariable", "startmodule", "stopmodule", "usemodule", "usetexmodule", "useluamodule", "setupmodule", "currentmoduleparameter", "moduleparameter", "everystarttext", "everystoptext", "startTEXpage", "stopTEXpage", "enablemode", "disablemode", "preventmode", "definemode", "globalenablemode", "globaldisablemode", "globalpreventmode", "pushmode", "popmode", "typescriptone", "typescripttwo", "typescriptthree", "mathsizesuffix", "mathordcode", "mathopcode", "mathbincode", "mathrelcode", "mathopencode", "mathclosecode", "mathpunctcode", "mathalphacode", "mathinnercode", "mathnothingcode", "mathlimopcode", "mathnolopcode", "mathboxcode", "mathchoicecode", "mathaccentcode", "mathradicalcode", "constantnumber", "constantnumberargument", "constantdimen", "constantdimenargument", "constantemptyargument", "continueifinputfile", "luastringsep", "!!bs", "!!es", "lefttorightmark", "righttoleftmark", "lrm", "rlm", "bidilre", "bidirle", "bidipop", "bidilro", "bidirlo", "breakablethinspace", "nobreakspace", "nonbreakablespace", "narrownobreakspace", "zerowidthnobreakspace", "ideographicspace", "ideographichalffillspace", "twoperemspace", "threeperemspace", "fourperemspace", "fiveperemspace", "sixperemspace", "figurespace", "punctuationspace", "hairspace", "enquad", "emquad", "zerowidthspace", "zerowidthnonjoiner", "zerowidthjoiner", "zwnj", "zwj", "optionalspace", "asciispacechar", "softhyphen", "Ux", "eUx", "Umathaccents", "parfillleftskip", "parfillrightskip", "startlmtxmode", "stoplmtxmode", "startmkivmode", "stopmkivmode", "wildcardsymbol", "normalhyphenationcode", "automatichyphenationcode", "explicithyphenationcode", "syllablehyphenationcode", "uppercasehyphenationcode", "collapsehyphenationcode", "compoundhyphenationcode", "strictstarthyphenationcode", "strictendhyphenationcode", "automaticpenaltyhyphenationcode", "explicitpenaltyhyphenationcode", "permitgluehyphenationcode", "permitallhyphenationcode", "permitmathreplacehyphenationcode", "forcecheckhyphenationcode", "lazyligatureshyphenationcode", "forcehandlerhyphenationcode", "feedbackcompoundhyphenationcode", "ignoreboundshyphenationcode", "partialhyphenationcode", "completehyphenationcode", "normalizelinenormalizecode", "parindentskipnormalizecode", "swaphangindentnormalizecode", "swapparsshapenormalizecode", "breakafterdirnormalizecode", "removemarginkernsnormalizecode", "clipwidthnormalizecode", "flattendiscretionariesnormalizecode", "discardzerotabskipsnormalizecode", "noligaturingglyphoptioncode", "nokerningglyphoptioncode", "noleftligatureglyphoptioncode", "noleftkernglyphoptioncode", "norightligatureglyphoptioncode", "norightkernglyphoptioncode", "noexpansionglyphoptioncode", "noprotrusionglyphoptioncode", "noitaliccorrectionglyphoptioncode", "nokerningcode", "noligaturingcode", "frozenflagcode", "tolerantflagcode", "protectedflagcode", "primitiveflagcode", "permanentflagcode", "noalignedflagcode", "immutableflagcode", "mutableflagcode", "globalflagcode", "overloadedflagcode", "immediateflagcode", "conditionalflagcode", "valueflagcode", "instanceflagcode", "ordmathflattencode", "binmathflattencode", "relmathflattencode", "punctmathflattencode", "innermathflattencode", "normalworddiscoptioncode", "preworddiscoptioncode", "postworddiscoptioncode", "continuewhenlmtxmode" },
+ ["constants"]={ "zerocount", "minusone", "minustwo", "plusone", "plustwo", "plusthree", "plusfour", "plusfive", "plussix", "plusseven", "pluseight", "plusnine", "plusten", "pluseleven", "plustwelve", "plussixteen", "plusfifty", "plushundred", "plusonehundred", "plustwohundred", "plusfivehundred", "plusthousand", "plustenthousand", "plustwentythousand", "medcard", "maxcard", "maxcardminusone", "zeropoint", "onepoint", "halfapoint", "onebasepoint", "maxcount", "maxdimen", "scaledpoint", "thousandpoint", "points", "halfpoint", "zeroskip", "zeromuskip", "onemuskip", "pluscxxvii", "pluscxxviii", "pluscclv", "pluscclvi", "normalpagebox", "binaryshiftedten", "binaryshiftedtwenty", "binaryshiftedthirty", "directionlefttoright", "directionrighttoleft", "endoflinetoken", "outputnewlinechar", "emptytoks", "empty", "undefined", "prerollrun", "voidbox", "emptybox", "emptyvbox", "emptyhbox", "bigskipamount", "medskipamount", "smallskipamount", "fmtname", "fmtversion", "texengine", "texenginename", "texengineversion", "texenginefunctionality", "luatexengine", "pdftexengine", "xetexengine", "unknownengine", "contextformat", "contextversion", "contextlmtxmode", "contextmark", "mksuffix", "activecatcode", "bgroup", "egroup", "endline", "conditionaltrue", "conditionalfalse", "attributeunsetvalue", "statuswrite", "uprotationangle", "rightrotationangle", "downrotationangle", "leftrotationangle", "inicatcodes", "ctxcatcodes", "texcatcodes", "notcatcodes", "txtcatcodes", "vrbcatcodes", "prtcatcodes", "nilcatcodes", "luacatcodes", "tpacatcodes", "tpbcatcodes", "xmlcatcodes", "ctdcatcodes", "rlncatcodes", "escapecatcode", "begingroupcatcode", "endgroupcatcode", "mathshiftcatcode", "alignmentcatcode", "endoflinecatcode", "parametercatcode", "superscriptcatcode", "subscriptcatcode", "ignorecatcode", "spacecatcode", "lettercatcode", "othercatcode", "activecatcode", "commentcatcode", "invalidcatcode", "tabasciicode", "newlineasciicode", "formfeedasciicode", "endoflineasciicode", "endoffileasciicode", "commaasciicode", "spaceasciicode", "periodasciicode", "hashasciicode", "dollarasciicode", "commentasciicode", "ampersandasciicode", "colonasciicode", "backslashasciicode", "circumflexasciicode", "underscoreasciicode", "leftbraceasciicode", "barasciicode", "rightbraceasciicode", "tildeasciicode", "delasciicode", "leftparentasciicode", "rightparentasciicode", "lessthanasciicode", "morethanasciicode", "doublecommentsignal", "atsignasciicode", "exclamationmarkasciicode", "questionmarkasciicode", "doublequoteasciicode", "singlequoteasciicode", "forwardslashasciicode", "primeasciicode", "hyphenasciicode", "percentasciicode", "leftbracketasciicode", "rightbracketasciicode", "hsizefrozenparcode", "skipfrozenparcode", "hangfrozenparcode", "indentfrozenparcode", "parfillfrozenparcode", "adjustfrozenparcode", "protrudefrozenparcode", "tolerancefrozenparcode", "stretchfrozenparcode", "loosenessfrozenparcode", "lastlinefrozenparcode", "linepenaltyfrozenparcode", "clubpenaltyfrozenparcode", "widowpenaltyfrozenparcode", "displaypenaltyfrozenparcode", "brokenpenaltyfrozenparcode", "demeritsfrozenparcode", "shapefrozenparcode", "linefrozenparcode", "hyphenationfrozenparcode", "shapingpenaltiesfrozenparcode", "orphanpenaltyfrozenparcode", "allfrozenparcode", "activemathcharcode", "activetabtoken", "activeformfeedtoken", "activeendoflinetoken", "batchmodecode", "nonstopmodecode", "scrollmodecode", "errorstopmodecode", "bottomlevelgroupcode", "simplegroupcode", "hboxgroupcode", "adjustedhboxgroupcode", "vboxgroupcode", "vtopgroupcode", "aligngroupcode", "noaligngroupcode", "outputgroupcode", "mathgroupcode", "discretionarygroupcode", "insertgroupcode", "vadjustgroupcode", "vcentergroupcode", "mathabovegroupcode", "mathchoicegroupcode", "alsosimplegroupcode", "semisimplegroupcode", "mathshiftgroupcode", "mathleftgroupcode", "localboxgroupcode", "splitoffgroupcode", "splitkeepgroupcode", "preamblegroupcode", "alignsetgroupcode", "finrowgroupcode", "discretionarygroupcode", "markautomigrationcode", "insertautomigrationcode", "adjustautomigrationcode", "preautomigrationcode", "postautomigrationcode", "charnodecode", "hlistnodecode", "vlistnodecode", "rulenodecode", "insertnodecode", "marknodecode", "adjustnodecode", "ligaturenodecode", "discretionarynodecode", "whatsitnodecode", "mathnodecode", "gluenodecode", "kernnodecode", "penaltynodecode", "unsetnodecode", "mathsnodecode", "charifcode", "catifcode", "numifcode", "dimifcode", "oddifcode", "vmodeifcode", "hmodeifcode", "mmodeifcode", "innerifcode", "voidifcode", "hboxifcode", "vboxifcode", "xifcode", "eofifcode", "trueifcode", "falseifcode", "caseifcode", "definedifcode", "csnameifcode", "fontcharifcode", "overrulemathcontrolcode", "underrulemathcontrolcode", "radicalrulemathcontrolcode", "fractionrulemathcontrolcode", "accentskewhalfmathcontrolcode", "accentskewapplymathcontrolcode", "accentitalickernmathcontrolcode", "delimiteritalickernmathcontrolcode", "noorditalickernmathcontrolcode", "charitalicwidthmathcontrolcode", "charitalicnoreboxmathcontrolcode", "boxednoitalickernmathcontrolcode", "nostaircasekernmathcontrolcode", "textitalickernmathcontrolcode", "noscriptitalickernmathcontrolcode", "italicshapekernmathcontrolcode", "noligaturingglyphoptioncode", "nokerningglyphoptioncode", "noexpansionglyphoptioncode", "noprotrusionglyphoptioncode", "noleftkerningglyphoptioncode", "noleftligaturingglyphoptioncode", "norightkerningglyphoptioncode", "norightligaturingglyphoptioncode", "noitaliccorrectionglyphoptioncode", "normalparcontextcode", "vmodeparcontextcode", "vboxparcontextcode", "vtopparcontextcode", "vcenterparcontextcode", "vadjustparcontextcode", "insertparcontextcode", "outputparcontextcode", "alignparcontextcode", "noalignparcontextcode", "spanparcontextcode", "resetparcontextcode", "leftoriginlistanchorcode", "leftheightlistanchorcode", "leftdepthlistanchorcode", "rightoriginlistanchorcode", "rightheightlistanchorcode", "rightdepthlistanchorcode", "centeroriginlistanchorcode", "centerheightlistanchorcode", "centerdepthlistanchorcode", "halfwaytotallistanchorcode", "halfwayheightlistanchorcode", "halfwaydepthlistanchorcode", "halfwayleftlistanchorcode", "halfwayrightlistanchorcode", "negatexlistsigncode", "negateylistsigncode", "negatelistsigncode", "fontslantperpoint", "fontinterwordspace", "fontinterwordstretch", "fontinterwordshrink", "fontexheight", "fontemwidth", "fontextraspace", "slantperpoint", "mathexheight", "mathemwidth", "interwordspace", "interwordstretch", "interwordshrink", "exheight", "emwidth", "extraspace", "mathaxisheight", "muquad", "startmode", "stopmode", "startnotmode", "stopnotmode", "startmodeset", "stopmodeset", "doifmode", "doifelsemode", "doifmodeelse", "doifnotmode", "startmodeset", "stopmodeset", "startallmodes", "stopallmodes", "startnotallmodes", "stopnotallmodes", "doifallmodes", "doifelseallmodes", "doifallmodeselse", "doifnotallmodes", "startenvironment", "stopenvironment", "environment", "startcomponent", "stopcomponent", "component", "startproduct", "stopproduct", "product", "startproject", "stopproject", "project", "starttext", "stoptext", "startnotext", "stopnotext", "startdocument", "stopdocument", "documentvariable", "unexpandeddocumentvariable", "setupdocument", "presetdocument", "doifelsedocumentvariable", "doifdocumentvariableelse", "doifdocumentvariable", "doifnotdocumentvariable", "startmodule", "stopmodule", "usemodule", "usetexmodule", "useluamodule", "setupmodule", "currentmoduleparameter", "moduleparameter", "everystarttext", "everystoptext", "startTEXpage", "stopTEXpage", "enablemode", "disablemode", "preventmode", "definemode", "globalenablemode", "globaldisablemode", "globalpreventmode", "pushmode", "popmode", "typescriptone", "typescripttwo", "typescriptthree", "mathsizesuffix", "mathordcode", "mathopcode", "mathbincode", "mathrelcode", "mathopencode", "mathclosecode", "mathpunctcode", "mathalphacode", "mathinnercode", "mathnothingcode", "mathlimopcode", "mathnolopcode", "mathboxcode", "mathchoicecode", "mathaccentcode", "mathradicalcode", "constantnumber", "constantnumberargument", "constantdimen", "constantdimenargument", "constantemptyargument", "continueifinputfile", "luastringsep", "!!bs", "!!es", "lefttorightmark", "righttoleftmark", "lrm", "rlm", "bidilre", "bidirle", "bidipop", "bidilro", "bidirlo", "breakablethinspace", "nobreakspace", "nonbreakablespace", "narrownobreakspace", "zerowidthnobreakspace", "ideographicspace", "ideographichalffillspace", "twoperemspace", "threeperemspace", "fourperemspace", "fiveperemspace", "sixperemspace", "figurespace", "punctuationspace", "hairspace", "enquad", "emquad", "zerowidthspace", "zerowidthnonjoiner", "zerowidthjoiner", "zwnj", "zwj", "optionalspace", "asciispacechar", "softhyphen", "Ux", "eUx", "Umathaccents", "parfillleftskip", "parfillrightskip", "startlmtxmode", "stoplmtxmode", "startmkivmode", "stopmkivmode", "wildcardsymbol", "normalhyphenationcode", "automatichyphenationcode", "explicithyphenationcode", "syllablehyphenationcode", "uppercasehyphenationcode", "collapsehyphenationcode", "compoundhyphenationcode", "strictstarthyphenationcode", "strictendhyphenationcode", "automaticpenaltyhyphenationcode", "explicitpenaltyhyphenationcode", "permitgluehyphenationcode", "permitallhyphenationcode", "permitmathreplacehyphenationcode", "forcecheckhyphenationcode", "lazyligatureshyphenationcode", "forcehandlerhyphenationcode", "feedbackcompoundhyphenationcode", "ignoreboundshyphenationcode", "partialhyphenationcode", "completehyphenationcode", "normalizelinenormalizecode", "parindentskipnormalizecode", "swaphangindentnormalizecode", "swapparsshapenormalizecode", "breakafterdirnormalizecode", "removemarginkernsnormalizecode", "clipwidthnormalizecode", "flattendiscretionariesnormalizecode", "discardzerotabskipsnormalizecode", "noligaturingglyphoptioncode", "nokerningglyphoptioncode", "noleftligatureglyphoptioncode", "noleftkernglyphoptioncode", "norightligatureglyphoptioncode", "norightkernglyphoptioncode", "noexpansionglyphoptioncode", "noprotrusionglyphoptioncode", "noitaliccorrectionglyphoptioncode", "nokerningcode", "noligaturingcode", "frozenflagcode", "tolerantflagcode", "protectedflagcode", "primitiveflagcode", "permanentflagcode", "noalignedflagcode", "immutableflagcode", "mutableflagcode", "globalflagcode", "overloadedflagcode", "immediateflagcode", "conditionalflagcode", "valueflagcode", "instanceflagcode", "ordmathflattencode", "binmathflattencode", "relmathflattencode", "punctmathflattencode", "innermathflattencode", "normalworddiscoptioncode", "preworddiscoptioncode", "postworddiscoptioncode", "continuewhenlmtxmode" },
  ["helpers"]={ "startsetups", "stopsetups", "startxmlsetups", "stopxmlsetups", "startluasetups", "stopluasetups", "starttexsetups", "stoptexsetups", "startrawsetups", "stoprawsetups", "startlocalsetups", "stoplocalsetups", "starttexdefinition", "stoptexdefinition", "starttexcode", "stoptexcode", "startcontextcode", "stopcontextcode", "startcontextdefinitioncode", "stopcontextdefinitioncode", "texdefinition", "doifelsesetups", "doifsetupselse", "doifsetups", "doifnotsetups", "setup", "setups", "texsetup", "xmlsetup", "luasetup", "directsetup", "fastsetup", "copysetups", "resetsetups", "doifelsecommandhandler", "doifcommandhandlerelse", "doifnotcommandhandler", "doifcommandhandler", "newmode", "setmode", "resetmode", "newsystemmode", "setsystemmode", "resetsystemmode", "pushsystemmode", "popsystemmode", "globalsetmode", "globalresetmode", "globalsetsystemmode", "globalresetsystemmode", "booleanmodevalue", "newcount", "newdimen", "newskip", "newmuskip", "newbox", "newtoks", "newread", "newwrite", "newmarks", "newinsert", "newattribute", "newif", "newlanguage", "newfamily", "newfam", "newhelp", "then", "begcsname", "autorule", "strippedcsname", "checkedstrippedcsname", "nofarguments", "firstargumentfalse", "firstargumenttrue", "secondargumentfalse", "secondargumenttrue", "thirdargumentfalse", "thirdargumenttrue", "fourthargumentfalse", "fourthargumenttrue", "fifthargumentfalse", "fifthargumenttrue", "sixthargumentfalse", "sixthargumenttrue", "seventhargumentfalse", "seventhargumenttrue", "vkern", "hkern", "vpenalty", "hpenalty", "doglobal", "dodoglobal", "redoglobal", "resetglobal", "donothing", "untraceddonothing", "dontcomplain", "lessboxtracing", "forgetall", "donetrue", "donefalse", "foundtrue", "foundfalse", "inlineordisplaymath", "indisplaymath", "forcedisplaymath", "startforceddisplaymath", "stopforceddisplaymath", "startpickupmath", "stoppickupmath", "reqno", "mathortext", "thebox", "htdp", "unvoidbox", "hfilll", "vfilll", "mathbox", "mathlimop", "mathnolop", "mathnothing", "mathalpha", "currentcatcodetable", "defaultcatcodetable", "catcodetablename", "newcatcodetable", "startcatcodetable", "stopcatcodetable", "startextendcatcodetable", "stopextendcatcodetable", "pushcatcodetable", "popcatcodetable", "restorecatcodes", "setcatcodetable", "letcatcodecommand", "defcatcodecommand", "uedcatcodecommand", "hglue", "vglue", "hfillneg", "vfillneg", "hfilllneg", "vfilllneg", "ruledhss", "ruledhfil", "ruledhfill", "ruledhfilll", "ruledhfilneg", "ruledhfillneg", "normalhfillneg", "normalhfilllneg", "ruledvss", "ruledvfil", "ruledvfill", "ruledvfilll", "ruledvfilneg", "ruledvfillneg", "normalvfillneg", "normalvfilllneg", "ruledhbox", "ruledvbox", "ruledvtop", "ruledvcenter", "ruledmbox", "ruledhpack", "ruledvpack", "ruledtpack", "ruledhskip", "ruledvskip", "ruledkern", "ruledmskip", "ruledmkern", "ruledhglue", "ruledvglue", "normalhglue", "normalvglue", "ruledpenalty", "filledhboxb", "filledhboxr", "filledhboxg", "filledhboxc", "filledhboxm", "filledhboxy", "filledhboxk", "scratchstring", "scratchstringone", "scratchstringtwo", "tempstring", "scratchcounter", "globalscratchcounter", "privatescratchcounter", "scratchdimen", "globalscratchdimen", "privatescratchdimen", "scratchskip", "globalscratchskip", "privatescratchskip", "scratchmuskip", "globalscratchmuskip", "privatescratchmuskip", "scratchtoks", "globalscratchtoks", "privatescratchtoks", "scratchbox", "globalscratchbox", "privatescratchbox", "scratchmacro", "scratchmacroone", "scratchmacrotwo", "scratchconditiontrue", "scratchconditionfalse", "ifscratchcondition", "scratchconditiononetrue", "scratchconditiononefalse", "ifscratchconditionone", "scratchconditiontwotrue", "scratchconditiontwofalse", "ifscratchconditiontwo", "globalscratchcounterone", "globalscratchcountertwo", "globalscratchcounterthree", "groupedcommand", "groupedcommandcs", "triggergroupedcommand", "triggergroupedcommandcs", "simplegroupedcommand", "simplegroupedcommandcs", "pickupgroupedcommand", "pickupgroupedcommandcs", "usedbaselineskip", "usedlineskip", "usedlineskiplimit", "availablehsize", "localhsize", "setlocalhsize", "distributedhsize", "hsizefraction", "next", "nexttoken", "nextbox", "dowithnextbox", "dowithnextboxcs", "dowithnextboxcontent", "dowithnextboxcontentcs", "flushnextbox", "boxisempty", "boxtostring", "contentostring", "prerolltostring", "givenwidth", "givenheight", "givendepth", "scangivendimensions", "scratchwidth", "scratchheight", "scratchdepth", "scratchoffset", "scratchdistance", "scratchtotal", "scratchhsize", "scratchvsize", "scratchxoffset", "scratchyoffset", "scratchhoffset", "scratchvoffset", "scratchxposition", "scratchyposition", "scratchtopoffset", "scratchbottomoffset", "scratchleftoffset", "scratchrightoffset", "scratchcounterone", "scratchcountertwo", "scratchcounterthree", "scratchcounterfour", "scratchcounterfive", "scratchcountersix", "scratchdimenone", "scratchdimentwo", "scratchdimenthree", "scratchdimenfour", "scratchdimenfive", "scratchdimensix", "scratchskipone", "scratchskiptwo", "scratchskipthree", "scratchskipfour", "scratchskipfive", "scratchskipsix", "scratchmuskipone", "scratchmuskiptwo", "scratchmuskipthree", "scratchmuskipfour", "scratchmuskipfive", "scratchmuskipsix", "scratchtoksone", "scratchtokstwo", "scratchtoksthree", "scratchtoksfour", "scratchtoksfive", "scratchtokssix", "scratchboxone", "scratchboxtwo", "scratchboxthree", "scratchboxfour", "scratchboxfive", "scratchboxsix", "scratchnx", "scratchny", "scratchmx", "scratchmy", "scratchunicode", "scratchmin", "scratchmax", "scratchleftskip", "scratchrightskip", "scratchtopskip", "scratchbottomskip", "doif", "doifnot", "doifelse", "firstinset", "doifinset", "doifnotinset", "doifelseinset", "doifinsetelse", "doifelsenextchar", "doifnextcharelse", "doifelsenextcharcs", "doifnextcharcselse", "doifelsenextoptional", "doifnextoptionalelse", "doifelsenextoptionalcs", "doifnextoptionalcselse", "doifelsefastoptionalcheck", "doiffastoptionalcheckelse", "doifelsefastoptionalcheckcs", "doiffastoptionalcheckcselse", "doifelsenextbgroup", "doifnextbgroupelse", "doifelsenextbgroupcs", "doifnextbgroupcselse", "doifelsenextparenthesis", "doifnextparenthesiselse", "doifelseundefined", "doifundefinedelse", "doifelsedefined", "doifdefinedelse", "doifundefined", "doifdefined", "doifelsevalue", "doifvalue", "doifnotvalue", "doifnothing", "doifsomething", "doifelsenothing", "doifnothingelse", "doifelsesomething", "doifsomethingelse", "doifvaluenothing", "doifvaluesomething", "doifelsevaluenothing", "doifvaluenothingelse", "doifelsedimension", "doifdimensionelse", "doifelsenumber", "doifnumberelse", "doifnumber", "doifnotnumber", "doifelsecommon", "doifcommonelse", "doifcommon", "doifnotcommon", "doifinstring", "doifnotinstring", "doifelseinstring", "doifinstringelse", "doifelseassignment", "doifassignmentelse", "docheckassignment", "doifelseassignmentcs", "doifassignmentelsecs", "validassignment", "novalidassignment", "doiftext", "doifelsetext", "doiftextelse", "doifnottext", "quitcondition", "truecondition", "falsecondition", "tracingall", "tracingnone", "loggingall", "tracingcatcodes", "showluatokens", "aliasmacro", "removetoks", "appendtoks", "prependtoks", "appendtotoks", "prependtotoks", "to", "endgraf", "endpar", "reseteverypar", "finishpar", "empty", "null", "space", "quad", "enspace", "emspace", "charspace", "nbsp", "crlf", "obeyspaces", "obeylines", "obeytabs", "obeypages", "obeyedspace", "obeyedline", "obeyedtab", "obeyedpage", "normalspace", "naturalspace", "controlspace", "normalspaces", "ignoretabs", "ignorelines", "ignorepages", "ignoreeofs", "setcontrolspaces", "executeifdefined", "singleexpandafter", "doubleexpandafter", "tripleexpandafter", "dontleavehmode", "removelastspace", "removeunwantedspaces", "keepunwantedspaces", "removepunctuation", "ignoreparskip", "forcestrutdepth", "onlynonbreakablespace", "wait", "writestatus", "define", "defineexpandable", "redefine", "setmeasure", "setemeasure", "setgmeasure", "setxmeasure", "definemeasure", "freezemeasure", "measure", "measured", "directmeasure", "setquantity", "setequantity", "setgquantity", "setxquantity", "definequantity", "freezequantity", "quantity", "quantitied", "directquantity", "installcorenamespace", "getvalue", "getuvalue", "setvalue", "setevalue", "setgvalue", "setxvalue", "letvalue", "letgvalue", "resetvalue", "undefinevalue", "ignorevalue", "setuvalue", "setuevalue", "setugvalue", "setuxvalue", "globallet", "udef", "ugdef", "uedef", "uxdef", "checked", "unique", "getparameters", "geteparameters", "getgparameters", "getxparameters", "forgetparameters", "copyparameters", "getdummyparameters", "dummyparameter", "directdummyparameter", "setdummyparameter", "letdummyparameter", "setexpandeddummyparameter", "usedummystyleandcolor", "usedummystyleparameter", "usedummycolorparameter", "processcommalist", "processcommacommand", "quitcommalist", "quitprevcommalist", "processaction", "processallactions", "processfirstactioninset", "processallactionsinset", "unexpanded", "expanded", "startexpanded", "stopexpanded", "protect", "unprotect", "firstofoneargument", "firstoftwoarguments", "secondoftwoarguments", "firstofthreearguments", "secondofthreearguments", "thirdofthreearguments", "firstoffourarguments", "secondoffourarguments", "thirdoffourarguments", "fourthoffourarguments", "firstoffivearguments", "secondoffivearguments", "thirdoffivearguments", "fourthoffivearguments", "fifthoffivearguments", "firstofsixarguments", "secondofsixarguments", "thirdofsixarguments", "fourthofsixarguments", "fifthofsixarguments", "sixthofsixarguments", "firstofoneunexpanded", "firstoftwounexpanded", "secondoftwounexpanded", "firstofthreeunexpanded", "secondofthreeunexpanded", "thirdofthreeunexpanded", "gobbleoneargument", "gobbletwoarguments", "gobblethreearguments", "gobblefourarguments", "gobblefivearguments", "gobblesixarguments", "gobblesevenarguments", "gobbleeightarguments", "gobbleninearguments", "gobbletenarguments", "gobbleoneoptional", "gobbletwooptionals", "gobblethreeoptionals", "gobblefouroptionals", "gobblefiveoptionals", "dorecurse", "doloop", "exitloop", "dostepwiserecurse", "recurselevel", "recursedepth", "dofastloopcs", "fastloopindex", "fastloopfinal", "dowith", "doloopovermatch", "doloopovermatched", "doloopoverlist", "newconstant", "setnewconstant", "setconstant", "setconstantvalue", "newconditional", "settrue", "setfalse", "settruevalue", "setfalsevalue", "setconditional", "newmacro", "setnewmacro", "newfraction", "newsignal", "dosingleempty", "dodoubleempty", "dotripleempty", "doquadrupleempty", "doquintupleempty", "dosixtupleempty", "doseventupleempty", "dosingleargument", "dodoubleargument", "dotripleargument", "doquadrupleargument", "doquintupleargument", "dosixtupleargument", "doseventupleargument", "dosinglegroupempty", "dodoublegroupempty", "dotriplegroupempty", "doquadruplegroupempty", "doquintuplegroupempty", "permitspacesbetweengroups", "dontpermitspacesbetweengroups", "nopdfcompression", "maximumpdfcompression", "normalpdfcompression", "onlypdfobjectcompression", "nopdfobjectcompression", "modulonumber", "dividenumber", "getfirstcharacter", "doifelsefirstchar", "doiffirstcharelse", "startnointerference", "stopnointerference", "twodigits", "threedigits", "leftorright", "offinterlineskip", "oninterlineskip", "nointerlineskip", "strut", "halfstrut", "quarterstrut", "depthstrut", "halflinestrut", "noheightstrut", "setstrut", "strutbox", "strutht", "strutdp", "strutwd", "struthtdp", "strutgap", "begstrut", "endstrut", "lineheight", "leftboundary", "rightboundary", "signalcharacter", "aligncontentleft", "aligncontentmiddle", "aligncontentright", "shiftbox", "vpackbox", "hpackbox", "vpackedbox", "hpackedbox", "ordordspacing", "ordopspacing", "ordbinspacing", "ordrelspacing", "ordopenspacing", "ordclosespacing", "ordpunctspacing", "ordinnerspacing", "opordspacing", "opopspacing", "opbinspacing", "oprelspacing", "opopenspacing", "opclosespacing", "oppunctspacing", "opinnerspacing", "binordspacing", "binopspacing", "binbinspacing", "binrelspacing", "binopenspacing", "binclosespacing", "binpunctspacing", "bininnerspacing", "relordspacing", "relopspacing", "relbinspacing", "relrelspacing", "relopenspacing", "relclosespacing", "relpunctspacing", "relinnerspacing", "openordspacing", "openopspacing", "openbinspacing", "openrelspacing", "openopenspacing", "openclosespacing", "openpunctspacing", "openinnerspacing", "closeordspacing", "closeopspacing", "closebinspacing", "closerelspacing", "closeopenspacing", "closeclosespacing", "closepunctspacing", "closeinnerspacing", "punctordspacing", "punctopspacing", "punctbinspacing", "punctrelspacing", "punctopenspacing", "punctclosespacing", "punctpunctspacing", "punctinnerspacing", "innerordspacing", "inneropspacing", "innerbinspacing", "innerrelspacing", "inneropenspacing", "innerclosespacing", "innerpunctspacing", "innerinnerspacing", "normalreqno", "startimath", "stopimath", "normalstartimath", "normalstopimath", "startdmath", "stopdmath", "normalstartdmath", "normalstopdmath", "normalsuperscript", "normalsubscript", "normalnosuperscript", "normalnosubscript", "superscript", "subscript", "nosuperscript", "nosubscript", "superprescript", "subprescript", "nosuperprescript", "nosubsprecript", "uncramped", "cramped", "mathstyletrigger", "triggermathstyle", "mathstylefont", "mathsmallstylefont", "mathstyleface", "mathsmallstyleface", "mathstylecommand", "mathpalette", "mathstylehbox", "mathstylevbox", "mathstylevcenter", "mathstylevcenteredhbox", "mathstylevcenteredvbox", "mathtext", "setmathsmalltextbox", "setmathtextbox", "pushmathstyle", "popmathstyle", "triggerdisplaystyle", "triggertextstyle", "triggerscriptstyle", "triggerscriptscriptstyle", "triggeruncrampedstyle", "triggercrampedstyle", "triggersmallstyle", "triggeruncrampedsmallstyle", "triggercrampedsmallstyle", "triggerbigstyle", "triggeruncrampedbigstyle", "triggercrampedbigstyle", "luaexpr", "expelsedoif", "expdoif", "expdoifnot", "expdoifelsecommon", "expdoifcommonelse", "expdoifelseinset", "expdoifinsetelse", "ctxdirectlua", "ctxlatelua", "ctxsprint", "ctxwrite", "ctxcommand", "ctxdirectcommand", "ctxlatecommand", "ctxreport", "ctxlua", "luacode", "lateluacode", "directluacode", "registerctxluafile", "ctxloadluafile", "luaversion", "luamajorversion", "luaminorversion", "ctxluacode", "luaconditional", "luaexpanded", "ctxluamatch", "startluaparameterset", "stopluaparameterset", "luaparameterset", "definenamedlua", "obeylualines", "obeyluatokens", "startluacode", "stopluacode", "startlua", "stoplua", "startctxfunction", "stopctxfunction", "ctxfunction", "startctxfunctiondefinition", "stopctxfunctiondefinition", "installctxfunction", "installprotectedctxfunction", "installprotectedctxscanner", "installctxscanner", "resetctxscanner", "cldprocessfile", "cldloadfile", "cldloadviafile", "cldcontext", "cldcommand", "carryoverpar", "freezeparagraphproperties", "defrostparagraphproperties", "setparagraphfreezing", "forgetparagraphfreezing", "updateparagraphproperties", "updateparagraphpenalties", "updateparagraphdemerits", "updateparagraphshapes", "updateparagraphlines", "lastlinewidth", "assumelongusagecs", "Umathbotaccent", "Umathtopaccent", "righttolefthbox", "lefttorighthbox", "righttoleftvbox", "lefttorightvbox", "righttoleftvtop", "lefttorightvtop", "rtlhbox", "ltrhbox", "rtlvbox", "ltrvbox", "rtlvtop", "ltrvtop", "autodirhbox", "autodirvbox", "autodirvtop", "leftorrighthbox", "leftorrightvbox", "leftorrightvtop", "lefttoright", "righttoleft", "checkedlefttoright", "checkedrighttoleft", "synchronizelayoutdirection", "synchronizedisplaydirection", "synchronizeinlinedirection", "dirlre", "dirrle", "dirlro", "dirrlo", "rtltext", "ltrtext", "lesshyphens", "morehyphens", "nohyphens", "dohyphens", "dohyphencollapsing", "nohyphencollapsing", "compounddiscretionary", "Ucheckedstartdisplaymath", "Ucheckedstopdisplaymath", "break", "nobreak", "allowbreak", "goodbreak", "nospace", "nospacing", "dospacing", "naturalhbox", "naturalvbox", "naturalvtop", "naturalhpack", "naturalvpack", "naturaltpack", "reversehbox", "reversevbox", "reversevtop", "reversehpack", "reversevpack", "reversetpack", "hcontainer", "vcontainer", "tcontainer", "frule", "compoundhyphenpenalty", "start", "stop", "unsupportedcs", "openout", "closeout", "write", "openin", "closein", "read", "readline", "readfromterminal", "boxlines", "boxline", "setboxline", "copyboxline", "boxlinewd", "boxlineht", "boxlinedp", "boxlinenw", "boxlinenh", "boxlinend", "boxlinels", "boxliners", "boxlinelh", "boxlinerh", "boxlinelp", "boxlinerp", "boxlinein", "boxrangewd", "boxrangeht", "boxrangedp", "bitwiseset", "bitwiseand", "bitwiseor", "bitwisexor", "bitwisenot", "bitwisenil", "ifbitwiseand", "bitwise", "bitwiseshift", "bitwiseflip", "textdir", "linedir", "pardir", "boxdir", "prelistbox", "postlistbox", "prelistcopy", "postlistcopy", "setprelistbox", "setpostlistbox", "noligaturing", "nokerning", "noexpansion", "noprotrusion", "noleftkerning", "noleftligaturing", "norightkerning", "norightligaturing", "noitaliccorrection", "futureletnexttoken", "defbackslashbreak", "letbackslashbreak", "pushoverloadmode", "popoverloadmode", "pushrunstate", "poprunstate", "suggestedalias", "showboxhere", "discoptioncodestring", "flagcodestring", "frozenparcodestring", "glyphoptioncodestring", "groupcodestring", "hyphenationcodestring", "mathcontrolcodestring", "mathflattencodestring", "normalizecodestring", "parcontextcodestring", "newlocalcount", "newlocaldimen", "newlocalskip", "newlocalmuskip", "newlocaltoks", "newlocalbox", "newlocalwrite", "newlocalread", "setnewlocalcount", "setnewlocaldimen", "setnewlocalskip", "setnewlocalmuskip", "setnewlocaltoks", "setnewlocalbox", "ifexpression" },
 }
\ No newline at end of file
diff --git a/context/data/scite/context/lexers/data/scite-context-data-tex.lua b/context/data/scite/context/lexers/data/scite-context-data-tex.lua
index 4144c1007..dda8a7aff 100644
--- a/context/data/scite/context/lexers/data/scite-context-data-tex.lua
+++ b/context/data/scite/context/lexers/data/scite-context-data-tex.lua
@@ -1,7 +1,7 @@
 return {
  ["aleph"]={ "Alephminorversion", "Alephrevision", "Alephversion" },
  ["etex"]={ "botmarks", "clubpenalties", "currentgrouplevel", "currentgrouptype", "currentifbranch", "currentiflevel", "currentiftype", "detokenize", "dimexpr", "displaywidowpenalties", "everyeof", "firstmarks", "fontchardp", "fontcharht", "fontcharic", "fontcharwd", "glueexpr", "glueshrink", "glueshrinkorder", "gluestretch", "gluestretchorder", "gluetomu", "ifcsname", "ifdefined", "iffontchar", "interactionmode", "interlinepenalties", "lastlinefit", "lastnodetype", "marks", "muexpr", "mutoglue", "numexpr", "pagediscards", "parshapedimen", "parshapeindent", "parshapelength", "predisplaydirection", "protected", "savinghyphcodes", "savingvdiscards", "scantokens", "showgroups", "showifs", "showtokens", "splitbotmarks", "splitdiscards", "splitfirstmarks", "topmarks", "tracingassigns", "tracinggroups", "tracingifs", "tracinglevels", "tracingnesting", "unexpanded", "unless", "widowpenalties" },
- ["luatex"]={ "UUskewed", "UUskewedwithdelims", "Uabove", "Uabovewithdelims", "Uatop", "Uatopwithdelims", "Uchar", "Udelcode", "Udelcodenum", "Udelimiter", "Udelimiterover", "Udelimiterunder", "Uhextensible", "Uleft", "Umathaccent", "Umathaccentbaseheight", "Umathaccentvariant", "Umathadapttoleft", "Umathadapttoright", "Umathaxis", "Umathbinbinspacing", "Umathbinclosespacing", "Umathbininnerspacing", "Umathbinopenspacing", "Umathbinopspacing", "Umathbinordspacing", "Umathbinpunctspacing", "Umathbinrelspacing", "Umathbotaccentvariant", "Umathchar", "Umathcharclass", "Umathchardef", "Umathcharfam", "Umathcharnum", "Umathcharnumdef", "Umathcharslot", "Umathclass", "Umathclosebinspacing", "Umathcloseclosespacing", "Umathcloseinnerspacing", "Umathcloseopenspacing", "Umathcloseopspacing", "Umathcloseordspacing", "Umathclosepunctspacing", "Umathcloserelspacing", "Umathcode", "Umathcodenum", "Umathconnectoroverlapmin", "Umathdegreevariant", "Umathdelimiterovervariant", "Umathdelimiterundervariant", "Umathdenominatorvariant", "Umathextrasubpreshift", "Umathextrasubshift", "Umathextrasuppreshift", "Umathextrasupshift", "Umathfractiondelsize", "Umathfractiondenomdown", "Umathfractiondenomvgap", "Umathfractionnumup", "Umathfractionnumvgap", "Umathfractionrule", "Umathfractionvariant", "Umathhextensiblevariant", "Umathinnerbinspacing", "Umathinnerclosespacing", "Umathinnerinnerspacing", "Umathinneropenspacing", "Umathinneropspacing", "Umathinnerordspacing", "Umathinnerpunctspacing", "Umathinnerrelspacing", "Umathlimitabovebgap", "Umathlimitabovekern", "Umathlimitabovevgap", "Umathlimitbelowbgap", "Umathlimitbelowkern", "Umathlimitbelowvgap", "Umathlimits", "Umathnoaxis", "Umathnolimits", "Umathnolimitsubfactor", "Umathnolimitsupfactor", "Umathnumeratorvariant", "Umathopbinspacing", "Umathopclosespacing", "Umathopenbinspacing", "Umathopenclosespacing", "Umathopeninnerspacing", "Umathopenopenspacing", "Umathopenopspacing", "Umathopenordspacing", "Umathopenpunctspacing", "Umathopenrelspacing", "Umathopenupdepth", "Umathopenupheight", "Umathoperatorsize", "Umathopinnerspacing", "Umathopopenspacing", "Umathopopspacing", "Umathopordspacing", "Umathoppunctspacing", "Umathoprelspacing", "Umathordbinspacing", "Umathordclosespacing", "Umathordinnerspacing", "Umathordopenspacing", "Umathordopspacing", "Umathordordspacing", "Umathordpunctspacing", "Umathordrelspacing", "Umathoverbarkern", "Umathoverbarrule", "Umathoverbarvgap", "Umathoverdelimiterbgap", "Umathoverdelimitervariant", "Umathoverdelimitervgap", "Umathoverlayaccentvariant", "Umathoverlinevariant", "Umathphantom", "Umathpunctbinspacing", "Umathpunctclosespacing", "Umathpunctinnerspacing", "Umathpunctopenspacing", "Umathpunctopspacing", "Umathpunctordspacing", "Umathpunctpunctspacing", "Umathpunctrelspacing", "Umathquad", "Umathradicaldegreeafter", "Umathradicaldegreebefore", "Umathradicaldegreeraise", "Umathradicalkern", "Umathradicalrule", "Umathradicalvariant", "Umathradicalvgap", "Umathrelbinspacing", "Umathrelclosespacing", "Umathrelinnerspacing", "Umathrelopenspacing", "Umathrelopspacing", "Umathrelordspacing", "Umathrelpunctspacing", "Umathrelrelspacing", "Umathskewedfractionhgap", "Umathskewedfractionvgap", "Umathspaceafterscript", "Umathspacebeforescript", "Umathspacingmode", "Umathstackdenomdown", "Umathstacknumup", "Umathstackvariant", "Umathstackvgap", "Umathsubscriptvariant", "Umathsubshiftdown", "Umathsubshiftdrop", "Umathsubsupshiftdown", "Umathsubsupvgap", "Umathsubtopmax", "Umathsupbottommin", "Umathsuperscriptvariant", "Umathsupshiftdrop", "Umathsupshiftup", "Umathsupsubbottommax", "Umathtopaccentvariant", "Umathunderbarkern", "Umathunderbarrule", "Umathunderbarvgap", "Umathunderdelimiterbgap", "Umathunderdelimitervariant", "Umathunderdelimitervgap", "Umathunderlinevariant", "Umathvextensiblevariant", "Umathvoid", "Umathxscale", "Umathyscale", "Umiddle", "Unosubprescript", "Unosubscript", "Unosuperprescript", "Unosuperscript", "Uover", "Uoverdelimiter", "Uoverwithdelims", "Uradical", "Uright", "Uroot", "Uskewed", "Uskewedwithdelims", "Ustack", "Ustartdisplaymath", "Ustartmath", "Ustopdisplaymath", "Ustopmath", "Ustyle", "Usubprescript", "Usubscript", "Usuperprescript", "Usuperscript", "Uunderdelimiter", "Uvextensible", "adjustspacing", "adjustspacingshrink", "adjustspacingstep", "adjustspacingstretch", "afterassigned", "aftergrouped", "aliased", "alignmark", "aligntab", "atendofgroup", "atendofgrouped", "attribute", "attributedef", "automaticdiscretionary", "automatichyphenpenalty", "automigrationmode", "autoparagraphmode", "begincsname", "beginlocalcontrol", "boundary", "boxattribute", "boxdirection", "boxorientation", "boxshift", "boxtotal", "boxxmove", "boxxoffset", "boxymove", "boxyoffset", "catcodetable", "clearmarks", "crampeddisplaystyle", "crampedscriptscriptstyle", "crampedscriptstyle", "crampedtextstyle", "csstring", "currentloopiterator", "currentloopnesting", "currentmarks", "defcsname", "dimensiondef", "dimexpression", "directlua", "edefcsname", "efcode", "endlocalcontrol", "enforced", "etoks", "etoksapp", "etokspre", "everybeforepar", "everytab", "exceptionpenalty", "expand", "expandafterpars", "expandafterspaces", "expandcstoken", "expanded", "expandedloop", "expandtoken", "explicitdiscretionary", "explicithyphenpenalty", "firstvalidlanguage", "flushmarks", "fontid", "fontmathcontrol", "fontspecdef", "fontspecid", "fontspecifiedsize", "fontspecscale", "fontspecxscale", "fontspecyscale", "fonttextcontrol", "formatname", "frozen", "futurecsname", "futuredef", "futureexpand", "futureexpandis", "futureexpandisap", "gdefcsname", "gleaders", "glet", "gletcsname", "glettonothing", "gluespecdef", "glyphdatafield", "glyphoptions", "glyphscale", "glyphscriptfield", "glyphscriptscale", "glyphscriptscriptscale", "glyphstatefield", "glyphtextscale", "glyphxoffset", "glyphxscale", "glyphyoffset", "glyphyscale", "gtoksapp", "gtokspre", "hccode", "hjcode", "hpack", "hyphenationmin", "hyphenationmode", "ifabsdim", "ifabsnum", "ifarguments", "ifboolean", "ifchkdim", "ifchknum", "ifcmpdim", "ifcmpnum", "ifcondition", "ifcstok", "ifdimexpression", "ifdimval", "ifempty", "ifflags", "ifhaschar", "ifhastok", "ifhastoks", "ifhasxtoks", "ifincsname", "ifinsert", "ifmathparameter", "ifmathstyle", "ifnumexpression", "ifnumval", "ifparameter", "ifparameters", "ifrelax", "iftok", "ignorearguments", "ignorepars", "immediate", "immutable", "initcatcodetable", "insertbox", "insertcopy", "insertdepth", "insertdistance", "insertheight", "insertheights", "insertlimit", "insertmaxdepth", "insertmode", "insertmultiplier", "insertpenalty", "insertprogress", "insertstorage", "insertstoring", "insertunbox", "insertuncopy", "insertwidth", "instance", "integerdef", "lastarguments", "lastchkdim", "lastchknum", "lastnamedcs", "lastnodesubtype", "lastparcontext", "leftmarginkern", "letcharcode", "letcsname", "letfrozen", "letprotected", "lettonothing", "linedirection", "localbrokenpenalty", "localcontrol", "localcontrolled", "localcontrolledloop", "localinterlinepenalty", "localleftbox", "localleftboxbox", "localmiddlebox", "localmiddleboxbox", "localrightbox", "localrightboxbox", "lpcode", "luabytecode", "luabytecodecall", "luacopyinputnodes", "luadef", "luaescapestring", "luafunction", "luafunctioncall", "luatexbanner", "luatexrevision", "luatexversion", "mathcontrolmode", "mathdelimitersmode", "mathdirection", "mathdisplayskipmode", "matheqnogapstep", "mathflattenmode", "mathfontcontrol", "mathlimitsmode", "mathnolimitsmode", "mathpenaltiesmode", "mathrulesfam", "mathrulesmode", "mathrulethicknessmode", "mathscale", "mathscriptboxmode", "mathscriptcharmode", "mathscriptsmode", "mathstyle", "mathsurroundmode", "mathsurroundskip", "mugluespecdef", "mutable", "noaligned", "noboundary", "nohrule", "norelax", "normalizelinemode", "nospaces", "novrule", "numericscale", "numexpression", "orelse", "orphanpenalties", "orphanpenalty", "orunless", "outputbox", "overloaded", "overloadmode", "pageboundary", "pagevsize", "parametercount", "parametermark", "parattribute", "pardirection", "permanent", "postexhyphenchar", "posthyphenchar", "prebinoppenalty", "predisplaygapfactor", "preexhyphenchar", "prehyphenchar", "prerelpenalty", "protrudechars", "protrusionboundary", "pxdimen", "quitloop", "quitvmode", "retokenized", "rightmarginkern", "rpcode", "savecatcodetable", "scantextokens", "semiexpanded", "semiprotected", "setfontid", "shapingpenaltiesmode", "shapingpenalty", "snapshotpar", "supmarkmode", "swapcsvalues", "tabsize", "textdirection", "thewithoutunit", "tokenized", "toksapp", "tokspre", "tolerant", "tpack", "tracingadjusts", "tracingalignments", "tracingexpressions", "tracingfonts", "tracingfullboxes", "tracinghyphenation", "tracinginserts", "tracingmarks", "tracingmath", "undent", "unexpandedloop", "unletfrozen", "unletprotected", "untraced", "vpack", "wordboundary", "wrapuppar", "xdefcsname", "xtoks", "xtoksapp", "xtokspre" },
+ ["luatex"]={ "UUskewed", "UUskewedwithdelims", "Uabove", "Uabovewithdelims", "Uatop", "Uatopwithdelims", "Uchar", "Udelcode", "Udelcodenum", "Udelimiter", "Udelimiterover", "Udelimiterunder", "Uhextensible", "Uleft", "Umathaccent", "Umathaccentbaseheight", "Umathaccentvariant", "Umathadapttoleft", "Umathadapttoright", "Umathaxis", "Umathbinbinspacing", "Umathbinclosespacing", "Umathbininnerspacing", "Umathbinopenspacing", "Umathbinopspacing", "Umathbinordspacing", "Umathbinpunctspacing", "Umathbinrelspacing", "Umathbotaccentvariant", "Umathchar", "Umathcharclass", "Umathchardef", "Umathcharfam", "Umathcharnum", "Umathcharnumdef", "Umathcharslot", "Umathclass", "Umathclosebinspacing", "Umathcloseclosespacing", "Umathcloseinnerspacing", "Umathcloseopenspacing", "Umathcloseopspacing", "Umathcloseordspacing", "Umathclosepunctspacing", "Umathcloserelspacing", "Umathcode", "Umathcodenum", "Umathconnectoroverlapmin", "Umathdegreevariant", "Umathdelimiterovervariant", "Umathdelimiterundervariant", "Umathdenominatorvariant", "Umathextrasubpreshift", "Umathextrasubshift", "Umathextrasuppreshift", "Umathextrasupshift", "Umathfractiondelsize", "Umathfractiondenomdown", "Umathfractiondenomvgap", "Umathfractionnumup", "Umathfractionnumvgap", "Umathfractionrule", "Umathfractionvariant", "Umathhextensiblevariant", "Umathinnerbinspacing", "Umathinnerclosespacing", "Umathinnerinnerspacing", "Umathinneropenspacing", "Umathinneropspacing", "Umathinnerordspacing", "Umathinnerpunctspacing", "Umathinnerrelspacing", "Umathlimitabovebgap", "Umathlimitabovekern", "Umathlimitabovevgap", "Umathlimitbelowbgap", "Umathlimitbelowkern", "Umathlimitbelowvgap", "Umathlimits", "Umathnoaxis", "Umathnolimits", "Umathnolimitsubfactor", "Umathnolimitsupfactor", "Umathnumeratorvariant", "Umathopbinspacing", "Umathopclosespacing", "Umathopenbinspacing", "Umathopenclosespacing", "Umathopeninnerspacing", "Umathopenopenspacing", "Umathopenopspacing", "Umathopenordspacing", "Umathopenpunctspacing", "Umathopenrelspacing", "Umathopenupdepth", "Umathopenupheight", "Umathoperatorsize", "Umathopinnerspacing", "Umathopopenspacing", "Umathopopspacing", "Umathopordspacing", "Umathoppunctspacing", "Umathoprelspacing", "Umathordbinspacing", "Umathordclosespacing", "Umathordinnerspacing", "Umathordopenspacing", "Umathordopspacing", "Umathordordspacing", "Umathordpunctspacing", "Umathordrelspacing", "Umathoverbarkern", "Umathoverbarrule", "Umathoverbarvgap", "Umathoverdelimiterbgap", "Umathoverdelimitervariant", "Umathoverdelimitervgap", "Umathoverlayaccentvariant", "Umathoverlinevariant", "Umathphantom", "Umathpunctbinspacing", "Umathpunctclosespacing", "Umathpunctinnerspacing", "Umathpunctopenspacing", "Umathpunctopspacing", "Umathpunctordspacing", "Umathpunctpunctspacing", "Umathpunctrelspacing", "Umathquad", "Umathradicaldegreeafter", "Umathradicaldegreebefore", "Umathradicaldegreeraise", "Umathradicalkern", "Umathradicalrule", "Umathradicalvariant", "Umathradicalvgap", "Umathrelbinspacing", "Umathrelclosespacing", "Umathrelinnerspacing", "Umathrelopenspacing", "Umathrelopspacing", "Umathrelordspacing", "Umathrelpunctspacing", "Umathrelrelspacing", "Umathskewedfractionhgap", "Umathskewedfractionvgap", "Umathspaceafterscript", "Umathspacebeforescript", "Umathspacingmode", "Umathstackdenomdown", "Umathstacknumup", "Umathstackvariant", "Umathstackvgap", "Umathsubscriptvariant", "Umathsubshiftdown", "Umathsubshiftdrop", "Umathsubsupshiftdown", "Umathsubsupvgap", "Umathsubtopmax", "Umathsupbottommin", "Umathsuperscriptvariant", "Umathsupshiftdrop", "Umathsupshiftup", "Umathsupsubbottommax", "Umathtopaccentvariant", "Umathunderbarkern", "Umathunderbarrule", "Umathunderbarvgap", "Umathunderdelimiterbgap", "Umathunderdelimitervariant", "Umathunderdelimitervgap", "Umathunderlinevariant", "Umathvextensiblevariant", "Umathvoid", "Umathxscale", "Umathyscale", "Umiddle", "Unosubprescript", "Unosubscript", "Unosuperprescript", "Unosuperscript", "Uover", "Uoverdelimiter", "Uoverwithdelims", "Uradical", "Uright", "Uroot", "Uskewed", "Uskewedwithdelims", "Ustack", "Ustartdisplaymath", "Ustartmath", "Ustopdisplaymath", "Ustopmath", "Ustyle", "Usubprescript", "Usubscript", "Usuperprescript", "Usuperscript", "Uunderdelimiter", "Uvextensible", "adjustspacing", "adjustspacingshrink", "adjustspacingstep", "adjustspacingstretch", "afterassigned", "aftergrouped", "aliased", "alignmark", "aligntab", "atendofgroup", "atendofgrouped", "attribute", "attributedef", "automaticdiscretionary", "automatichyphenpenalty", "automigrationmode", "autoparagraphmode", "begincsname", "beginlocalcontrol", "boundary", "boxanchor", "boxanchors", "boxattribute", "boxdirection", "boxgeometry", "boxorientation", "boxshift", "boxsource", "boxtarget", "boxtotal", "boxxmove", "boxxoffset", "boxymove", "boxyoffset", "catcodetable", "clearmarks", "crampeddisplaystyle", "crampedscriptscriptstyle", "crampedscriptstyle", "crampedtextstyle", "csstring", "currentloopiterator", "currentloopnesting", "currentmarks", "defcsname", "dimensiondef", "dimexpression", "directlua", "edefcsname", "efcode", "endlocalcontrol", "enforced", "etoks", "etoksapp", "etokspre", "everybeforepar", "everytab", "exceptionpenalty", "expand", "expandafterpars", "expandafterspaces", "expandcstoken", "expanded", "expandedloop", "expandtoken", "explicitdiscretionary", "explicithyphenpenalty", "firstvalidlanguage", "flushmarks", "fontid", "fontmathcontrol", "fontspecdef", "fontspecid", "fontspecifiedsize", "fontspecscale", "fontspecxscale", "fontspecyscale", "fonttextcontrol", "formatname", "frozen", "futurecsname", "futuredef", "futureexpand", "futureexpandis", "futureexpandisap", "gdefcsname", "gleaders", "glet", "gletcsname", "glettonothing", "gluespecdef", "glyphdatafield", "glyphoptions", "glyphscale", "glyphscriptfield", "glyphscriptscale", "glyphscriptscriptscale", "glyphstatefield", "glyphtextscale", "glyphxoffset", "glyphxscale", "glyphyoffset", "glyphyscale", "gtoksapp", "gtokspre", "hccode", "hjcode", "hpack", "hyphenationmin", "hyphenationmode", "ifabsdim", "ifabsnum", "ifarguments", "ifboolean", "ifchkdim", "ifchknum", "ifcmpdim", "ifcmpnum", "ifcondition", "ifcstok", "ifdimexpression", "ifdimval", "ifempty", "ifflags", "ifhaschar", "ifhastok", "ifhastoks", "ifhasxtoks", "ifincsname", "ifinsert", "ifmathparameter", "ifmathstyle", "ifnumexpression", "ifnumval", "ifparameter", "ifparameters", "ifrelax", "iftok", "ignorearguments", "ignorepars", "immediate", "immutable", "initcatcodetable", "insertbox", "insertcopy", "insertdepth", "insertdistance", "insertheight", "insertheights", "insertlimit", "insertmaxdepth", "insertmode", "insertmultiplier", "insertpenalty", "insertprogress", "insertstorage", "insertstoring", "insertunbox", "insertuncopy", "insertwidth", "instance", "integerdef", "lastarguments", "lastchkdim", "lastchknum", "lastnamedcs", "lastnodesubtype", "lastparcontext", "leftmarginkern", "letcharcode", "letcsname", "letfrozen", "letprotected", "lettonothing", "linedirection", "localbrokenpenalty", "localcontrol", "localcontrolled", "localcontrolledloop", "localinterlinepenalty", "localleftbox", "localleftboxbox", "localmiddlebox", "localmiddleboxbox", "localrightbox", "localrightboxbox", "lpcode", "luabytecode", "luabytecodecall", "luacopyinputnodes", "luadef", "luaescapestring", "luafunction", "luafunctioncall", "luatexbanner", "luatexrevision", "luatexversion", "mathcontrolmode", "mathdelimitersmode", "mathdirection", "mathdisplayskipmode", "matheqnogapstep", "mathflattenmode", "mathfontcontrol", "mathlimitsmode", "mathnolimitsmode", "mathpenaltiesmode", "mathrulesfam", "mathrulesmode", "mathrulethicknessmode", "mathscale", "mathscriptboxmode", "mathscriptcharmode", "mathscriptsmode", "mathstyle", "mathsurroundmode", "mathsurroundskip", "mugluespecdef", "mutable", "noaligned", "noboundary", "nohrule", "norelax", "normalizelinemode", "nospaces", "novrule", "numericscale", "numexpression", "orelse", "orphanpenalties", "orphanpenalty", "orunless", "outputbox", "overloaded", "overloadmode", "pageboundary", "pageboundarypenalty", "pagevsize", "parametercount", "parametermark", "parattribute", "pardirection", "permanent", "postexhyphenchar", "posthyphenchar", "prebinoppenalty", "predisplaygapfactor", "preexhyphenchar", "prehyphenchar", "prerelpenalty", "protrudechars", "protrusionboundary", "pxdimen", "quitloop", "quitvmode", "retokenized", "rightmarginkern", "rpcode", "savecatcodetable", "scantextokens", "semiexpanded", "semiprotected", "setfontid", "shapingpenaltiesmode", "shapingpenalty", "snapshotpar", "supmarkmode", "swapcsvalues", "tabsize", "textdirection", "thewithoutunit", "tokenized", "toksapp", "tokspre", "tolerant", "tpack", "tracingadjusts", "tracingalignments", "tracingexpressions", "tracingfonts", "tracingfullboxes", "tracinghyphenation", "tracinginserts", "tracingmarks", "tracingmath", "tracingnodes", "undent", "unexpandedloop", "unletfrozen", "unletprotected", "untraced", "vpack", "wordboundary", "wrapuppar", "xdefcsname", "xtoks", "xtoksapp", "xtokspre" },
  ["omega"]={ "Omegaminorversion", "Omegarevision", "Omegaversion" },
  ["pdftex"]={ "ifpdfabsdim", "ifpdfabsnum", "ifpdfprimitive", "pdfadjustspacing", "pdfannot", "pdfcatalog", "pdfcolorstack", "pdfcolorstackinit", "pdfcompresslevel", "pdfcopyfont", "pdfcreationdate", "pdfdecimaldigits", "pdfdest", "pdfdestmargin", "pdfdraftmode", "pdfeachlinedepth", "pdfeachlineheight", "pdfendlink", "pdfendthread", "pdffirstlineheight", "pdffontattr", "pdffontexpand", "pdffontname", "pdffontobjnum", "pdffontsize", "pdfgamma", "pdfgentounicode", "pdfglyphtounicode", "pdfhorigin", "pdfignoreddimen", "pdfignoreunknownimages", "pdfimageaddfilename", "pdfimageapplygamma", "pdfimagegamma", "pdfimagehicolor", "pdfimageresolution", "pdfincludechars", "pdfinclusioncopyfonts", "pdfinclusionerrorlevel", "pdfinfo", "pdfinfoomitdate", "pdfinsertht", "pdflastannot", "pdflastlinedepth", "pdflastlink", "pdflastobj", "pdflastxform", "pdflastximage", "pdflastximagepages", "pdflastxpos", "pdflastypos", "pdflinkmargin", "pdfliteral", "pdfmajorversion", "pdfmapfile", "pdfmapline", "pdfminorversion", "pdfnames", "pdfnoligatures", "pdfnormaldeviate", "pdfobj", "pdfobjcompresslevel", "pdfomitcharset", "pdfomitcidset", "pdfoutline", "pdfoutput", "pdfpageattr", "pdfpagebox", "pdfpageheight", "pdfpageref", "pdfpageresources", "pdfpagesattr", "pdfpagewidth", "pdfpkfixeddpi", "pdfpkmode", "pdfpkresolution", "pdfprimitive", "pdfprotrudechars", "pdfpxdimen", "pdfrandomseed", "pdfrecompress", "pdfrefobj", "pdfrefxform", "pdfrefximage", "pdfreplacefont", "pdfrestore", "pdfretval", "pdfsave", "pdfsavepos", "pdfsetmatrix", "pdfsetrandomseed", "pdfstartlink", "pdfstartthread", "pdfsuppressoptionalinfo", "pdfsuppressptexinfo", "pdftexbanner", "pdftexrevision", "pdftexversion", "pdfthread", "pdfthreadmargin", "pdftracingfonts", "pdftrailer", "pdftrailerid", "pdfuniformdeviate", "pdfuniqueresname", "pdfvorigin", "pdfxform", "pdfxformattr", "pdfxformmargin", "pdfxformname", "pdfxformresources", "pdfximage" },
  ["tex"]={ " ", "-", "/", "above", "abovedisplayshortskip", "abovedisplayskip", "abovewithdelims", "accent", "adjdemerits", "advance", "afterassignment", "aftergroup", "aligncontent", "atop", "atopwithdelims", "badness", "baselineskip", "batchmode", "begingroup", "beginsimplegroup", "belowdisplayshortskip", "belowdisplayskip", "binoppenalty", "botmark", "box", "boxmaxdepth", "brokenpenalty", "catcode", "char", "chardef", "cleaders", "clubpenalty", "copy", "count", "countdef", "cr", "crcr", "csname", "day", "deadcycles", "def", "defaulthyphenchar", "defaultskewchar", "delcode", "delimiter", "delimiterfactor", "delimitershortfall", "dimen", "dimendef", "discretionary", "displayindent", "displaylimits", "displaystyle", "displaywidowpenalty", "displaywidth", "divide", "doublehyphendemerits", "dp", "dump", "edef", "else", "emergencystretch", "end", "endcsname", "endgroup", "endinput", "endlinechar", "endsimplegroup", "eqno", "errhelp", "errmessage", "errorcontextlines", "errorstopmode", "escapechar", "everycr", "everydisplay", "everyhbox", "everyjob", "everymath", "everypar", "everyvbox", "exhyphenchar", "exhyphenpenalty", "expandafter", "fam", "fi", "finalhyphendemerits", "firstmark", "floatingpenalty", "font", "fontdimen", "fontname", "fontspecifiedname", "futurelet", "gdef", "global", "globaldefs", "glyph", "halign", "hangafter", "hangindent", "hbadness", "hbox", "hfil", "hfill", "hfilneg", "hfuzz", "holdinginserts", "hrule", "hsize", "hskip", "hss", "ht", "hyphenation", "hyphenchar", "hyphenpenalty", "if", "ifcase", "ifcat", "ifdim", "iffalse", "ifhbox", "ifhmode", "ifinner", "ifmmode", "ifnum", "ifodd", "iftrue", "ifvbox", "ifvmode", "ifvoid", "ifx", "ignorespaces", "indent", "input", "inputlineno", "insert", "insertpenalties", "interlinepenalty", "jobname", "kern", "language", "lastbox", "lastkern", "lastpenalty", "lastskip", "lccode", "leaders", "left", "lefthyphenmin", "leftskip", "leqno", "let", "limits", "linepenalty", "lineskip", "lineskiplimit", "long", "looseness", "lower", "lowercase", "mark", "mathaccent", "mathbin", "mathchar", "mathchardef", "mathchoice", "mathclose", "mathcode", "mathinner", "mathop", "mathopen", "mathord", "mathpunct", "mathrel", "mathsurround", "maxdeadcycles", "maxdepth", "meaning", "meaningasis", "meaningfull", "meaningless", "medmuskip", "message", "middle", "mkern", "month", "moveleft", "moveright", "mskip", "multiply", "muskip", "muskipdef", "newlinechar", "noalign", "noexpand", "noindent", "nolimits", "nonscript", "nonstopmode", "nulldelimiterspace", "nullfont", "number", "omit", "or", "outer", "output", "outputpenalty", "over", "overfullrule", "overline", "overshoot", "overwithdelims", "pagedepth", "pagefilllstretch", "pagefillstretch", "pagefilstretch", "pagegoal", "pageshrink", "pagestretch", "pagetotal", "par", "parfillleftskip", "parfillskip", "parindent", "parshape", "parskip", "patterns", "pausing", "penalty", "postdisplaypenalty", "predisplaypenalty", "predisplaysize", "pretolerance", "prevdepth", "prevgraf", "radical", "raise", "relax", "relpenalty", "right", "righthyphenmin", "rightskip", "romannumeral", "scaledfontdimen", "scriptfont", "scriptscriptfont", "scriptscriptstyle", "scriptspace", "scriptstyle", "scrollmode", "setbox", "setlanguage", "sfcode", "shipout", "show", "showbox", "showboxbreadth", "showboxdepth", "showlists", "shownodedetails", "showthe", "skewchar", "skip", "skipdef", "spacefactor", "spaceskip", "span", "splitbotmark", "splitfirstmark", "splitmaxdepth", "splittopskip", "string", "tabskip", "textfont", "textstyle", "the", "thickmuskip", "thinmuskip", "time", "todimension", "tointeger", "toks", "toksdef", "tolerance", "topmark", "topskip", "toscaled", "tracingcommands", "tracinglostchars", "tracingmacros", "tracingonline", "tracingoutput", "tracingpages", "tracingparagraphs", "tracingrestores", "tracingstats", "uccode", "uchyph", "underline", "unhbox", "unhcopy", "unhpack", "unkern", "unpenalty", "unskip", "unvbox", "unvcopy", "unvpack", "uppercase", "vadjust", "valign", "vbadness", "vbox", "vcenter", "vfil", "vfill", "vfilneg", "vfuzz", "vrule", "vsize", "vskip", "vsplit", "vss", "vtop", "wd", "widowpenalty", "xdef", "xleaders", "xspaceskip", "year" },
diff --git a/context/data/scite/context/scite-context-data-context.properties b/context/data/scite/context/scite-context-data-context.properties
index 3a79825df..ebe5b861f 100644
--- a/context/data/scite/context/scite-context-data-context.properties
+++ b/context/data/scite/context/scite-context-data-context.properties
@@ -57,52 +57,55 @@ textitalickernmathcontrolcode noscriptitalickernmathcontrolcode italicshapekernm
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 norightligaturingglyphoptioncode noitaliccorrectionglyphoptioncode normalparcontextcode vmodeparcontextcode vboxparcontextcode \
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-fontextraspace slantperpoint mathexheight mathemwidth interwordspace \
-interwordstretch interwordshrink exheight emwidth extraspace \
-mathaxisheight muquad startmode stopmode startnotmode \
-stopnotmode startmodeset stopmodeset doifmode doifelsemode \
-doifmodeelse doifnotmode startmodeset stopmodeset startallmodes \
-stopallmodes startnotallmodes stopnotallmodes doifallmodes doifelseallmodes \
-doifallmodeselse doifnotallmodes startenvironment stopenvironment environment \
-startcomponent stopcomponent component startproduct stopproduct \
-product startproject stopproject project starttext \
-stoptext startnotext stopnotext startdocument stopdocument \
-documentvariable unexpandeddocumentvariable setupdocument presetdocument doifelsedocumentvariable \
-doifdocumentvariableelse doifdocumentvariable doifnotdocumentvariable startmodule stopmodule \
-usemodule usetexmodule useluamodule setupmodule currentmoduleparameter \
-moduleparameter everystarttext everystoptext startTEXpage stopTEXpage \
-enablemode disablemode preventmode definemode globalenablemode \
-globaldisablemode globalpreventmode pushmode popmode typescriptone \
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+emwidth extraspace mathaxisheight muquad startmode \
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+doifmode doifelsemode doifmodeelse doifnotmode startmodeset \
+stopmodeset startallmodes stopallmodes startnotallmodes stopnotallmodes \
+doifallmodes doifelseallmodes doifallmodeselse doifnotallmodes startenvironment \
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+project starttext stoptext startnotext stopnotext \
+startdocument stopdocument documentvariable unexpandeddocumentvariable setupdocument \
+presetdocument doifelsedocumentvariable doifdocumentvariableelse doifdocumentvariable doifnotdocumentvariable \
+startmodule stopmodule usemodule usetexmodule useluamodule \
+setupmodule currentmoduleparameter moduleparameter everystarttext everystoptext \
+startTEXpage stopTEXpage enablemode disablemode preventmode \
+definemode globalenablemode globaldisablemode globalpreventmode pushmode \
+popmode typescriptone typescripttwo typescriptthree mathsizesuffix \
+mathordcode mathopcode mathbincode mathrelcode mathopencode \
+mathclosecode mathpunctcode mathalphacode mathinnercode mathnothingcode \
+mathlimopcode mathnolopcode mathboxcode mathchoicecode mathaccentcode \
+mathradicalcode constantnumber constantnumberargument constantdimen constantdimenargument \
+constantemptyargument continueifinputfile luastringsep !!bs !!es \
+lefttorightmark righttoleftmark lrm rlm bidilre \
+bidirle bidipop bidilro bidirlo breakablethinspace \
+nobreakspace nonbreakablespace narrownobreakspace zerowidthnobreakspace ideographicspace \
+ideographichalffillspace twoperemspace threeperemspace fourperemspace fiveperemspace \
+sixperemspace figurespace punctuationspace hairspace enquad \
+emquad zerowidthspace zerowidthnonjoiner zerowidthjoiner zwnj \
+zwj optionalspace asciispacechar softhyphen Ux \
+eUx Umathaccents parfillleftskip parfillrightskip startlmtxmode \
+stoplmtxmode startmkivmode stopmkivmode wildcardsymbol normalhyphenationcode \
+automatichyphenationcode explicithyphenationcode syllablehyphenationcode uppercasehyphenationcode collapsehyphenationcode \
+compoundhyphenationcode strictstarthyphenationcode strictendhyphenationcode automaticpenaltyhyphenationcode explicitpenaltyhyphenationcode \
+permitgluehyphenationcode permitallhyphenationcode permitmathreplacehyphenationcode forcecheckhyphenationcode lazyligatureshyphenationcode \
+forcehandlerhyphenationcode feedbackcompoundhyphenationcode ignoreboundshyphenationcode partialhyphenationcode completehyphenationcode \
+normalizelinenormalizecode parindentskipnormalizecode swaphangindentnormalizecode swapparsshapenormalizecode breakafterdirnormalizecode \
+removemarginkernsnormalizecode clipwidthnormalizecode flattendiscretionariesnormalizecode discardzerotabskipsnormalizecode noligaturingglyphoptioncode \
+nokerningglyphoptioncode noleftligatureglyphoptioncode noleftkernglyphoptioncode norightligatureglyphoptioncode norightkernglyphoptioncode \
+noexpansionglyphoptioncode noprotrusionglyphoptioncode noitaliccorrectionglyphoptioncode nokerningcode noligaturingcode \
+frozenflagcode tolerantflagcode protectedflagcode primitiveflagcode permanentflagcode \
+noalignedflagcode immutableflagcode mutableflagcode globalflagcode overloadedflagcode \
+immediateflagcode conditionalflagcode valueflagcode instanceflagcode ordmathflattencode \
+binmathflattencode relmathflattencode punctmathflattencode innermathflattencode normalworddiscoptioncode \
+preworddiscoptioncode postworddiscoptioncode continuewhenlmtxmode 
 
 keywordclass.context.helpers=\
 startsetups stopsetups startxmlsetups stopxmlsetups \
diff --git a/context/data/scite/context/scite-context-data-tex.properties b/context/data/scite/context/scite-context-data-tex.properties
index 63ccbfa61..ed4941315 100644
--- a/context/data/scite/context/scite-context-data-tex.properties
+++ b/context/data/scite/context/scite-context-data-tex.properties
@@ -60,8 +60,9 @@ Uunderdelimiter Uvextensible adjustspacing adjustspacingshrink adjustspacingstep
 adjustspacingstretch afterassigned aftergrouped aliased alignmark \
 aligntab atendofgroup atendofgrouped attribute attributedef \
 automaticdiscretionary automatichyphenpenalty automigrationmode autoparagraphmode begincsname \
-beginlocalcontrol boundary boxattribute boxdirection boxorientation \
-boxshift boxtotal boxxmove boxxoffset boxymove \
+beginlocalcontrol boundary boxanchor boxanchors boxattribute \
+boxdirection boxgeometry boxorientation boxshift boxsource \
+boxtarget boxtotal boxxmove boxxoffset boxymove \
 boxyoffset catcodetable clearmarks crampeddisplaystyle crampedscriptscriptstyle \
 crampedscriptstyle crampedtextstyle csstring currentloopiterator currentloopnesting \
 currentmarks defcsname dimensiondef dimexpression directlua \
@@ -102,19 +103,19 @@ mathscriptsmode mathstyle mathsurroundmode mathsurroundskip mugluespecdef \
 mutable noaligned noboundary nohrule norelax \
 normalizelinemode nospaces novrule numericscale numexpression \
 orelse orphanpenalties orphanpenalty orunless outputbox \
-overloaded overloadmode pageboundary pagevsize parametercount \
-parametermark parattribute pardirection permanent postexhyphenchar \
-posthyphenchar prebinoppenalty predisplaygapfactor preexhyphenchar prehyphenchar \
-prerelpenalty protrudechars protrusionboundary pxdimen quitloop \
-quitvmode retokenized rightmarginkern rpcode savecatcodetable \
-scantextokens semiexpanded semiprotected setfontid shapingpenaltiesmode \
-shapingpenalty snapshotpar supmarkmode swapcsvalues tabsize \
-textdirection thewithoutunit tokenized toksapp tokspre \
-tolerant tpack tracingadjusts tracingalignments tracingexpressions \
-tracingfonts tracingfullboxes tracinghyphenation tracinginserts tracingmarks \
-tracingmath undent unexpandedloop unletfrozen unletprotected \
-untraced vpack wordboundary wrapuppar xdefcsname \
-xtoks xtoksapp xtokspre 
+overloaded overloadmode pageboundary pageboundarypenalty pagevsize \
+parametercount parametermark parattribute pardirection permanent \
+postexhyphenchar posthyphenchar prebinoppenalty predisplaygapfactor preexhyphenchar \
+prehyphenchar prerelpenalty protrudechars protrusionboundary pxdimen \
+quitloop quitvmode retokenized rightmarginkern rpcode \
+savecatcodetable scantextokens semiexpanded semiprotected setfontid \
+shapingpenaltiesmode shapingpenalty snapshotpar supmarkmode swapcsvalues \
+tabsize textdirection thewithoutunit tokenized toksapp \
+tokspre tolerant tpack tracingadjusts tracingalignments \
+tracingexpressions tracingfonts tracingfullboxes tracinghyphenation tracinginserts \
+tracingmarks tracingmath tracingnodes undent unexpandedloop \
+unletfrozen unletprotected untraced vpack wordboundary \
+wrapuppar xdefcsname xtoks xtoksapp xtokspre 
 
 keywordclass.tex.omega=\
 Omegaminorversion Omegarevision Omegaversion 
diff --git a/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json b/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json
index cb7308542..b19dac6c6 100644
--- a/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json
+++ b/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json
@@ -69,7 +69,7 @@
    "name" : "context.comment.comment.tex"
   },
   "constant" : {
-   "match" : "\u005C\u005C(zwnj|zwj|zerowidthspace|zerowidthnonjoiner|zerowidthnobreakspace|zerowidthjoiner|zeroskip|zeropoint|zeromuskip|zerocount|xmlcatcodes|xifcode|xetexengine|wildcardsymbol|widowpenaltyfrozenparcode|whatsitnodecode|vtopparcontextcode|vtopgroupcode|vrbcatcodes|voidifcode|voidbox|vmodeparcontextcode|vmodeifcode|vlistnodecode|vcenterparcontextcode|vcentergroupcode|vboxparcontextcode|vboxifcode|vboxgroupcode|valueflagcode|vadjustparcontextcode|vadjustgroupcode|usetexmodule|usemodule|useluamodule|uprotationangle|uppercasehyphenationcode|unsetnodecode|unknownengine|unexpandeddocumentvariable|underscoreasciicode|underrulemathcontrolcode|undefined|typescripttwo|typescriptthree|typescriptone|txtcatcodes|twoperemspace|trueifcode|tpbcatcodes|tpacatcodes|tolerantflagcode|tolerancefrozenparcode|tildeasciicode|threeperemspace|thousandpoint|textitalickernmathcontrolcode|texengineversion|texenginename|texenginefunctionality|texengine|texcatcodes|tabasciicode|syllablehyphenationcode|swapparsshapenormalizecode|swaphangindentnormalizecode|superscriptcatcode|subscriptcatcode|strictstarthyphenationcode|strictendhyphenationcode|stretchfrozenparcode|stoptext|stopproject|stopproduct|stopnotmode|stopnotext|stopnotallmodes|stopmodule|stopmodeset|stopmodeset|stopmode|stopmkivmode|stoplmtxmode|stopenvironment|stopdocument|stopcomponent|stopallmodes|stopTEXpage|statuswrite|starttext|startproject|startproduct|startnotmode|startnotext|startnotallmodes|startmodule|startmodeset|startmodeset|startmode|startmkivmode|startlmtxmode|startenvironment|startdocument|startcomponent|startallmodes|startTEXpage|splitoffgroupcode|splitkeepgroupcode|spanparcontextcode|spacecatcode|spaceasciicode|softhyphen|smallskipamount|slantperpoint|skipfrozenparcode|sixperemspace|singlequoteasciicode|simplegroupcode|shapingpenaltiesfrozenparcode|shapefrozenparcode|setupmodule|setupdocument|semisimplegroupcode|scrollmodecode|scaledpoint|rulenodecode|rlncatcodes|rlm|righttoleftmark|rightrotationangle|rightparentasciicode|rightbracketasciicode|rightbraceasciicode|resetparcontextcode|removemarginkernsnormalizecode|relmathflattencode|radicalrulemathcontrolcode|questionmarkasciicode|pushmode|punctuationspace|punctmathflattencode|prtcatcodes|protrudefrozenparcode|protectedflagcode|project|product|primitiveflagcode|primeasciicode|preworddiscoptioncode|preventmode|presetdocument|prerollrun|preautomigrationcode|preamblegroupcode|postworddiscoptioncode|postautomigrationcode|popmode|points|plustwohundred|plustwo|plustwentythousand|plustwelve|plusthree|plusthousand|plustenthousand|plusten|plussixteen|plussix|plusseven|plusonehundred|plusone|plusnine|plushundred|plusfour|plusfivehundred|plusfive|plusfifty|pluseleven|pluseight|pluscxxviii|pluscxxvii|pluscclvi|pluscclv|permitmathreplacehyphenationcode|permitgluehyphenationcode|permitallhyphenationcode|permanentflagcode|periodasciicode|percentasciicode|penaltynodecode|pdftexengine|partialhyphenationcode|parindentskipnormalizecode|parfillrightskip|parfillleftskip|parfillfrozenparcode|parametercatcode|overrulemathcontrolcode|overloadedflagcode|outputparcontextcode|outputnewlinechar|outputgroupcode|othercatcode|orphanpenaltyfrozenparcode|ordmathflattencode|optionalspace|onepoint|onemuskip|onebasepoint|oddifcode|numifcode|notcatcodes|nostaircasekernmathcontrolcode|noscriptitalickernmathcontrolcode|normalworddiscoptioncode|normalparcontextcode|normalpagebox|normalizelinenormalizecode|normalhyphenationcode|norightligaturingglyphoptioncode|norightligatureglyphoptioncode|norightkerningglyphoptioncode|norightkernglyphoptioncode|noprotrusionglyphoptioncode|noprotrusionglyphoptioncode|noorditalickernmathcontrolcode|nonstopmodecode|nonbreakablespace|noligaturingglyphoptioncode|noligaturingglyphoptioncode|noligaturingcode|noleftligaturingglyphoptioncode|noleftligatureglyphoptioncode|noleftkerningglyphoptioncode|noleftkernglyphoptioncode|nokerningglyphoptioncode|nokerningglyphoptioncode|nokerningcode|noitaliccorrectionglyphoptioncode|noitaliccorrectionglyphoptioncode|noexpansionglyphoptioncode|noexpansionglyphoptioncode|nobreakspace|noalignparcontextcode|noaligngroupcode|noalignedflagcode|nilcatcodes|newlineasciicode|narrownobreakspace|mutableflagcode|muquad|morethanasciicode|moduleparameter|mmodeifcode|mksuffix|minustwo|minusone|medskipamount|medcard|maxdimen|maxcount|maxcardminusone|maxcard|mathsnodecode|mathsizesuffix|mathshiftgroupcode|mathshiftcatcode|mathrelcode|mathradicalcode|mathpunctcode|mathordcode|mathopencode|mathopcode|mathnothingcode|mathnolopcode|mathnodecode|mathlimopcode|mathleftgroupcode|mathinnercode|mathgroupcode|mathexheight|mathemwidth|mathclosecode|mathchoicegroupcode|mathchoicecode|mathboxcode|mathbincode|mathaxisheight|mathalphacode|mathaccentcode|mathabovegroupcode|marknodecode|markautomigrationcode|luatexengine|luastringsep|luacatcodes|lrm|loosenessfrozenparcode|localboxgroupcode|linepenaltyfrozenparcode|linefrozenparcode|ligaturenodecode|lettercatcode|lessthanasciicode|lefttorightmark|leftrotationangle|leftparentasciicode|leftbracketasciicode|leftbraceasciicode|lazyligatureshyphenationcode|lastlinefrozenparcode|kernnodecode|italicshapekernmathcontrolcode|invalidcatcode|interwordstretch|interwordspace|interwordshrink|instanceflagcode|insertparcontextcode|insertnodecode|insertgroupcode|insertautomigrationcode|innermathflattencode|innerifcode|inicatcodes|indentfrozenparcode|immutableflagcode|immediateflagcode|ignorecatcode|ignoreboundshyphenationcode|ideographicspace|ideographichalffillspace|hyphenationfrozenparcode|hyphenasciicode|hsizefrozenparcode|hmodeifcode|hlistnodecode|hboxifcode|hboxgroupcode|hashasciicode|hangfrozenparcode|halfpoint|halfapoint|hairspace|gluenodecode|globalpreventmode|globalflagcode|globalenablemode|globaldisablemode|frozenflagcode|fractionrulemathcontrolcode|fourperemspace|forwardslashasciicode|formfeedasciicode|forcehandlerhyphenationcode|forcecheckhyphenationcode|fontslantperpoint|fontinterwordstretch|fontinterwordspace|fontinterwordshrink|fontextraspace|fontexheight|fontemwidth|fontcharifcode|fmtversion|fmtname|flattendiscretionariesnormalizecode|fiveperemspace|finrowgroupcode|figurespace|feedbackcompoundhyphenationcode|falseifcode|extraspace|explicitpenaltyhyphenationcode|explicithyphenationcode|exheight|exclamationmarkasciicode|everystoptext|everystarttext|escapecatcode|errorstopmodecode|eofifcode|environment|enquad|endoflinetoken|endoflinecatcode|endoflineasciicode|endoffileasciicode|endline|endgroupcatcode|enablemode|emwidth|emquad|emptyvbox|emptytoks|emptyhbox|emptybox|empty|egroup|eUx|downrotationangle|doublequoteasciicode|doublecommentsignal|dollarasciicode|doifnotmode|doifnotdocumentvariable|doifnotallmodes|doifmodeelse|doifmode|doifelsemode|doifelsedocumentvariable|doifelseallmodes|doifdocumentvariableelse|doifdocumentvariable|doifallmodeselse|doifallmodes|documentvariable|displaypenaltyfrozenparcode|discretionarynodecode|discretionarygroupcode|discretionarygroupcode|discardzerotabskipsnormalizecode|disablemode|directionrighttoleft|directionlefttoright|dimifcode|demeritsfrozenparcode|delimiteritalickernmathcontrolcode|delasciicode|definemode|definedifcode|currentmoduleparameter|ctxcatcodes|ctdcatcodes|csnameifcode|continuewhenlmtxmode|continueifinputfile|contextversion|contextmark|contextlmtxmode|contextformat|constantnumberargument|constantnumber|constantemptyargument|constantdimenargument|constantdimen|conditionaltrue|conditionalflagcode|conditionalfalse|compoundhyphenationcode|component|completehyphenationcode|commentcatcode|commentasciicode|commaasciicode|colonasciicode|collapsehyphenationcode|clubpenaltyfrozenparcode|clipwidthnormalizecode|circumflexasciicode|charnodecode|charitalicwidthmathcontrolcode|charitalicnoreboxmathcontrolcode|charifcode|catifcode|caseifcode|brokenpenaltyfrozenparcode|breakafterdirnormalizecode|breakablethinspace|boxednoitalickernmathcontrolcode|bottomlevelgroupcode|binmathflattencode|binaryshiftedtwenty|binaryshiftedthirty|binaryshiftedten|bigskipamount|bidirlo|bidirle|bidipop|bidilro|bidilre|bgroup|begingroupcatcode|batchmodecode|barasciicode|backslashasciicode|automaticpenaltyhyphenationcode|automatichyphenationcode|attributeunsetvalue|atsignasciicode|asciispacechar|ampersandasciicode|alsosimplegroupcode|allfrozenparcode|alignsetgroupcode|alignparcontextcode|alignmentcatcode|aligngroupcode|adjustnodecode|adjustfrozenparcode|adjustedhboxgroupcode|adjustautomigrationcode|activetabtoken|activemathcharcode|activeformfeedtoken|activeendoflinetoken|activecatcode|activecatcode|accentskewhalfmathcontrolcode|accentskewapplymathcontrolcode|accentitalickernmathcontrolcode|Ux|Umathaccents|!!es|!!bs)(?=[^a-zA-Z])",
+   "match" : "\u005C\u005C(zwnj|zwj|zerowidthspace|zerowidthnonjoiner|zerowidthnobreakspace|zerowidthjoiner|zeroskip|zeropoint|zeromuskip|zerocount|xmlcatcodes|xifcode|xetexengine|wildcardsymbol|widowpenaltyfrozenparcode|whatsitnodecode|vtopparcontextcode|vtopgroupcode|vrbcatcodes|voidifcode|voidbox|vmodeparcontextcode|vmodeifcode|vlistnodecode|vcenterparcontextcode|vcentergroupcode|vboxparcontextcode|vboxifcode|vboxgroupcode|valueflagcode|vadjustparcontextcode|vadjustgroupcode|usetexmodule|usemodule|useluamodule|uprotationangle|uppercasehyphenationcode|unsetnodecode|unknownengine|unexpandeddocumentvariable|underscoreasciicode|underrulemathcontrolcode|undefined|typescripttwo|typescriptthree|typescriptone|txtcatcodes|twoperemspace|trueifcode|tpbcatcodes|tpacatcodes|tolerantflagcode|tolerancefrozenparcode|tildeasciicode|threeperemspace|thousandpoint|textitalickernmathcontrolcode|texengineversion|texenginename|texenginefunctionality|texengine|texcatcodes|tabasciicode|syllablehyphenationcode|swapparsshapenormalizecode|swaphangindentnormalizecode|superscriptcatcode|subscriptcatcode|strictstarthyphenationcode|strictendhyphenationcode|stretchfrozenparcode|stoptext|stopproject|stopproduct|stopnotmode|stopnotext|stopnotallmodes|stopmodule|stopmodeset|stopmodeset|stopmode|stopmkivmode|stoplmtxmode|stopenvironment|stopdocument|stopcomponent|stopallmodes|stopTEXpage|statuswrite|starttext|startproject|startproduct|startnotmode|startnotext|startnotallmodes|startmodule|startmodeset|startmodeset|startmode|startmkivmode|startlmtxmode|startenvironment|startdocument|startcomponent|startallmodes|startTEXpage|splitoffgroupcode|splitkeepgroupcode|spanparcontextcode|spacecatcode|spaceasciicode|softhyphen|smallskipamount|slantperpoint|skipfrozenparcode|sixperemspace|singlequoteasciicode|simplegroupcode|shapingpenaltiesfrozenparcode|shapefrozenparcode|setupmodule|setupdocument|semisimplegroupcode|scrollmodecode|scaledpoint|rulenodecode|rlncatcodes|rlm|righttoleftmark|rightrotationangle|rightparentasciicode|rightoriginlistanchorcode|rightheightlistanchorcode|rightdepthlistanchorcode|rightbracketasciicode|rightbraceasciicode|resetparcontextcode|removemarginkernsnormalizecode|relmathflattencode|radicalrulemathcontrolcode|questionmarkasciicode|pushmode|punctuationspace|punctmathflattencode|prtcatcodes|protrudefrozenparcode|protectedflagcode|project|product|primitiveflagcode|primeasciicode|preworddiscoptioncode|preventmode|presetdocument|prerollrun|preautomigrationcode|preamblegroupcode|postworddiscoptioncode|postautomigrationcode|popmode|points|plustwohundred|plustwo|plustwentythousand|plustwelve|plusthree|plusthousand|plustenthousand|plusten|plussixteen|plussix|plusseven|plusonehundred|plusone|plusnine|plushundred|plusfour|plusfivehundred|plusfive|plusfifty|pluseleven|pluseight|pluscxxviii|pluscxxvii|pluscclvi|pluscclv|permitmathreplacehyphenationcode|permitgluehyphenationcode|permitallhyphenationcode|permanentflagcode|periodasciicode|percentasciicode|penaltynodecode|pdftexengine|partialhyphenationcode|parindentskipnormalizecode|parfillrightskip|parfillleftskip|parfillfrozenparcode|parametercatcode|overrulemathcontrolcode|overloadedflagcode|outputparcontextcode|outputnewlinechar|outputgroupcode|othercatcode|orphanpenaltyfrozenparcode|ordmathflattencode|optionalspace|onepoint|onemuskip|onebasepoint|oddifcode|numifcode|notcatcodes|nostaircasekernmathcontrolcode|noscriptitalickernmathcontrolcode|normalworddiscoptioncode|normalparcontextcode|normalpagebox|normalizelinenormalizecode|normalhyphenationcode|norightligaturingglyphoptioncode|norightligatureglyphoptioncode|norightkerningglyphoptioncode|norightkernglyphoptioncode|noprotrusionglyphoptioncode|noprotrusionglyphoptioncode|noorditalickernmathcontrolcode|nonstopmodecode|nonbreakablespace|noligaturingglyphoptioncode|noligaturingglyphoptioncode|noligaturingcode|noleftligaturingglyphoptioncode|noleftligatureglyphoptioncode|noleftkerningglyphoptioncode|noleftkernglyphoptioncode|nokerningglyphoptioncode|nokerningglyphoptioncode|nokerningcode|noitaliccorrectionglyphoptioncode|noitaliccorrectionglyphoptioncode|noexpansionglyphoptioncode|noexpansionglyphoptioncode|nobreakspace|noalignparcontextcode|noaligngroupcode|noalignedflagcode|nilcatcodes|newlineasciicode|negateylistsigncode|negatexlistsigncode|negatelistsigncode|narrownobreakspace|mutableflagcode|muquad|morethanasciicode|moduleparameter|mmodeifcode|mksuffix|minustwo|minusone|medskipamount|medcard|maxdimen|maxcount|maxcardminusone|maxcard|mathsnodecode|mathsizesuffix|mathshiftgroupcode|mathshiftcatcode|mathrelcode|mathradicalcode|mathpunctcode|mathordcode|mathopencode|mathopcode|mathnothingcode|mathnolopcode|mathnodecode|mathlimopcode|mathleftgroupcode|mathinnercode|mathgroupcode|mathexheight|mathemwidth|mathclosecode|mathchoicegroupcode|mathchoicecode|mathboxcode|mathbincode|mathaxisheight|mathalphacode|mathaccentcode|mathabovegroupcode|marknodecode|markautomigrationcode|luatexengine|luastringsep|luacatcodes|lrm|loosenessfrozenparcode|localboxgroupcode|linepenaltyfrozenparcode|linefrozenparcode|ligaturenodecode|lettercatcode|lessthanasciicode|lefttorightmark|leftrotationangle|leftparentasciicode|leftoriginlistanchorcode|leftheightlistanchorcode|leftdepthlistanchorcode|leftbracketasciicode|leftbraceasciicode|lazyligatureshyphenationcode|lastlinefrozenparcode|kernnodecode|italicshapekernmathcontrolcode|invalidcatcode|interwordstretch|interwordspace|interwordshrink|instanceflagcode|insertparcontextcode|insertnodecode|insertgroupcode|insertautomigrationcode|innermathflattencode|innerifcode|inicatcodes|indentfrozenparcode|immutableflagcode|immediateflagcode|ignorecatcode|ignoreboundshyphenationcode|ideographicspace|ideographichalffillspace|hyphenationfrozenparcode|hyphenasciicode|hsizefrozenparcode|hmodeifcode|hlistnodecode|hboxifcode|hboxgroupcode|hashasciicode|hangfrozenparcode|halfwaytotallistanchorcode|halfwayrightlistanchorcode|halfwayleftlistanchorcode|halfwayheightlistanchorcode|halfwaydepthlistanchorcode|halfpoint|halfapoint|hairspace|gluenodecode|globalpreventmode|globalflagcode|globalenablemode|globaldisablemode|frozenflagcode|fractionrulemathcontrolcode|fourperemspace|forwardslashasciicode|formfeedasciicode|forcehandlerhyphenationcode|forcecheckhyphenationcode|fontslantperpoint|fontinterwordstretch|fontinterwordspace|fontinterwordshrink|fontextraspace|fontexheight|fontemwidth|fontcharifcode|fmtversion|fmtname|flattendiscretionariesnormalizecode|fiveperemspace|finrowgroupcode|figurespace|feedbackcompoundhyphenationcode|falseifcode|extraspace|explicitpenaltyhyphenationcode|explicithyphenationcode|exheight|exclamationmarkasciicode|everystoptext|everystarttext|escapecatcode|errorstopmodecode|eofifcode|environment|enquad|endoflinetoken|endoflinecatcode|endoflineasciicode|endoffileasciicode|endline|endgroupcatcode|enablemode|emwidth|emquad|emptyvbox|emptytoks|emptyhbox|emptybox|empty|egroup|eUx|downrotationangle|doublequoteasciicode|doublecommentsignal|dollarasciicode|doifnotmode|doifnotdocumentvariable|doifnotallmodes|doifmodeelse|doifmode|doifelsemode|doifelsedocumentvariable|doifelseallmodes|doifdocumentvariableelse|doifdocumentvariable|doifallmodeselse|doifallmodes|documentvariable|displaypenaltyfrozenparcode|discretionarynodecode|discretionarygroupcode|discretionarygroupcode|discardzerotabskipsnormalizecode|disablemode|directionrighttoleft|directionlefttoright|dimifcode|demeritsfrozenparcode|delimiteritalickernmathcontrolcode|delasciicode|definemode|definedifcode|currentmoduleparameter|ctxcatcodes|ctdcatcodes|csnameifcode|continuewhenlmtxmode|continueifinputfile|contextversion|contextmark|contextlmtxmode|contextformat|constantnumberargument|constantnumber|constantemptyargument|constantdimenargument|constantdimen|conditionaltrue|conditionalflagcode|conditionalfalse|compoundhyphenationcode|component|completehyphenationcode|commentcatcode|commentasciicode|commaasciicode|colonasciicode|collapsehyphenationcode|clubpenaltyfrozenparcode|clipwidthnormalizecode|circumflexasciicode|charnodecode|charitalicwidthmathcontrolcode|charitalicnoreboxmathcontrolcode|charifcode|centeroriginlistanchorcode|centerheightlistanchorcode|centerdepthlistanchorcode|catifcode|caseifcode|brokenpenaltyfrozenparcode|breakafterdirnormalizecode|breakablethinspace|boxednoitalickernmathcontrolcode|bottomlevelgroupcode|binmathflattencode|binaryshiftedtwenty|binaryshiftedthirty|binaryshiftedten|bigskipamount|bidirlo|bidirle|bidipop|bidilro|bidilre|bgroup|begingroupcatcode|batchmodecode|barasciicode|backslashasciicode|automaticpenaltyhyphenationcode|automatichyphenationcode|attributeunsetvalue|atsignasciicode|asciispacechar|ampersandasciicode|alsosimplegroupcode|allfrozenparcode|alignsetgroupcode|alignparcontextcode|alignmentcatcode|aligngroupcode|adjustnodecode|adjustfrozenparcode|adjustedhboxgroupcode|adjustautomigrationcode|activetabtoken|activemathcharcode|activeformfeedtoken|activeendoflinetoken|activecatcode|activecatcode|accentskewhalfmathcontrolcode|accentskewapplymathcontrolcode|accentitalickernmathcontrolcode|Ux|Umathaccents|!!es|!!bs)(?=[^a-zA-Z])",
    "name" : "context.constant.commands.constant.tex"
   },
   "csname" : {
@@ -216,7 +216,7 @@
    ]
   },
   "primitive" : {
-   "match" : 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)(?=[^a-zA-Z])",
+   "match" : 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spacing|normalUmathpunctopenspacing|normalUmathpunctinnerspacing|normalUmathpunctclosespacing|normalUmathpunctbinspacing|normalUmathphantom|normalUmathoverlinevariant|normalUmathoverlayaccentvariant|normalUmathoverdelimitervgap|normalUmathoverdelimitervariant|normalUmathoverdelimiterbgap|normalUmathoverbarvgap|normalUmathoverbarrule|normalUmathoverbarkern|normalUmathordrelspacing|normalUmathordpunctspacing|normalUmathordordspacing|normalUmathordopspacing|normalUmathordopenspacing|normalUmathordinnerspacing|normalUmathordclosespacing|normalUmathordbinspacing|normalUmathoprelspacing|normalUmathoppunctspacing|normalUmathopordspacing|normalUmathopopspacing|normalUmathopopenspacing|normalUmathopinnerspacing|normalUmathoperatorsize|normalUmathopenupheight|normalUmathopenupdepth|normalUmathopenrelspacing|normalUmathopenpunctspacing|normalUmathopenordspacing|normalUmathopenopspacing|normalUmathopenopenspacing|normalUmathopeninnerspacing|normalUmathopenclosespacing|normalUmathopenbinspacing|normalUmathopclosespacing|normalUmathopbinspacing|normalUmathnumeratorvariant|normalUmathnolimitsupfactor|normalUmathnolimitsubfactor|normalUmathnolimits|normalUmathnoaxis|normalUmathlimits|normalUmathlimitbelowvgap|normalUmathlimitbelowkern|normalUmathlimitbelowbgap|normalUmathlimitabovevgap|normalUmathlimitabovekern|normalUmathlimitabovebgap|normalUmathinnerrelspacing|normalUmathinnerpunctspacing|normalUmathinnerordspacing|normalUmathinneropspacing|normalUmathinneropenspacing|normalUmathinnerinnerspacing|normalUmathinnerclosespacing|normalUmathinnerbinspacing|normalUmathhextensiblevariant|normalUmathfractionvariant|normalUmathfractionrule|normalUmathfractionnumvgap|normalUmathfractionnumup|normalUmathfractiondenomvgap|normalUmathfractiondenomdown|normalUmathfractiondelsize|normalUmathextrasupshift|normalUmathextrasuppreshift|normalUmathextrasubshift|normalUmathextrasubpreshift|normalUmathdenominatorvariant|normalUmathdelimiterundervariant|normalUmathdelimiterovervariant|normalUmathdegreevariant|normalUmathconnectoroverlapmin|normalUmathcodenum|normalUmathcode|normalUmathcloserelspacing|normalUmathclosepunctspacing|normalUmathcloseordspacing|normalUmathcloseopspacing|normalUmathcloseopenspacing|normalUmathcloseinnerspacing|normalUmathcloseclosespacing|normalUmathclosebinspacing|normalUmathclass|normalUmathcharslot|normalUmathcharnumdef|normalUmathcharnum|normalUmathcharfam|normalUmathchardef|normalUmathcharclass|normalUmathchar|normalUmathbotaccentvariant|normalUmathbinrelspacing|normalUmathbinpunctspacing|normalUmathbinordspacing|normalUmathbinopspacing|normalUmathbinopenspacing|normalUmathbininnerspacing|normalUmathbinclosespacing|normalUmathbinbinspacing|normalUmathaxis|normalUmathadapttoright|normalUmathadapttoleft|normalUmathaccentvariant|normalUmathaccentbaseheight|normalUmathaccent|normalUleft|normalUhextensible|normalUdelimiterunder|normalUdelimiterover|normalUdelimiter|normalUdelcodenum|normalUdelcode|normalUchar|normalUatopwithdelims|normalUatop|normalUabovewithdelims|normalUabove|normalUUskewedwithdelims|normalUUskewed|normalOmegaversion|normalOmegarevision|normalOmegaminorversion|normalAlephversion|normalAlephrevision|normalAlephminorversion|normal 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)(?=[^a-zA-Z])",
    "name" : "context.primitive.commands.primitive.tex"
   },
   "reserved" : {
diff --git a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
index a45c15946..399713c41 100644
--- a/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
+++ b/doc/context/sources/general/manuals/luatex/luatex-nodes.tex
@@ -959,7 +959,7 @@ what you generate.
 \NC \type{width}  \NC number \NC the width (not used in calculations) \NC \NR
 \NC \type{height} \NC number \NC the height (not used in calculations) \NC \NR
 \NC \type{depth}  \NC number \NC the depth (not used in calculations) \NC \NR
-\NC \type{objnum} \NC number \NC the referenced \PDF\ object number \NC \NR
+\NC \type{objnum} \NC number \NC the referenced \PDF\ (structure) object number \NC \NR
 \NC \type{data}   \NC string \NC the annotation data \NC \NR
 \LL
 \stoptabulate
@@ -1016,10 +1016,16 @@ objects.
 \TB
 \NC \type{action_type} \NC number           \NC the kind of action involved \NC \NR
 \NC \type{action_id}   \NC number or string \NC token list reference or string \NC \NR
-\NC \type{named_id}    \NC number           \NC the index of the destination \NC \NR
+%NC \type{named_id}    \NC number           \NC the index of the destination \NC \NR
+% a strange key but needed for latex; a probably downward incompable patch instead of a fix
+\NC \type{named_id}    \NC number           \NC are \type {dest_id} and \type {struct_id} string values? \NC \NR
 \NC \type{file}        \NC string           \NC the target filename \NC \NR
 \NC \type{new_window}  \NC number           \NC the window state of the target \NC \NR
 \NC \type{data}        \NC string           \NC the name of the destination \NC \NR
+% needed for latex and therefore equivalent to pdftex
+\NC \type{struct_id}   \NC nil              \NC the action does not reference a structure destination \NC \NR
+\NC                    \NC number           \NC id of the referenced structure destination \NC \NR
+\NC                    \NC string           \NC name of the referenced structure destination \NC \NR
 \LL
 \stoptabulate
 
diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-anchoring.tex b/doc/context/sources/general/manuals/ontarget/ontarget-anchoring.tex
new file mode 100644
index 000000000..090c6ba0c
--- /dev/null
+++ b/doc/context/sources/general/manuals/ontarget/ontarget-anchoring.tex
@@ -0,0 +1,280 @@
+% language=us runpath=texruns:manuals/ontarget
+
+\startcomponent ontarget-eventually
+
+\environment ontarget-style
+
+\startchapter[title={Anchoring}]
+
+\startsection[title=Introduction]
+
+It is valid to question what functionality should be in the engine and what can
+best be implemented using callbacks and postprocessing of lists (and boxes)
+relying for instance on attributes as signals. In \LUATEX\ we are rather strict
+in this and assume that the second method is used. In \LUAMETATEX\ we still
+promote this but at the same time some (lightweight) functionality has been added
+to the engine that helps implementing some features more efficiently. Reasons are
+that it can be handy to carry (fundamental) properties around that are bound to
+nodes and that we can set them using primitives, especially for glyphs and boxes.
+That way they become part of the formal functionality that one can argue should
+be present in a modern engine. Examples for glyph nodes are scales, offsets and
+hyphenation, detailed ligature and kerning control. For box nodes we have for
+instance offsets and orientation. Most of these are always taken into account by
+core mechanisms like breaking paragraphs into lines, where dimensions matter in
+which case it really makes sense for them to be part of the engine design.
+
+Some properties are just passed on to for instance a font handler or the backend
+but still they belong to the core functionality. An example of the later is a
+(new) simple mechanism for anchoring boxes. This is not really a fundamental
+feature, because one can just move content around using a combination of kerning
+and boxing, either or not with offsets. But because we already have features like
+offsets to boxes it was not that much work to add anchoring as a more fundamental
+property. The frontend is agnostic to this feature because dimensions are kind of
+virtual here: the backend however carries the real burden. Because backends are
+written in \LUA\ it might have a performance hit simply because at least we need
+to check if this feature is used. Normally that can compensated when this feature
+{\em is} used because less work and shuffling around happens in the frontend. And
+when this feature is no longer experimental (and stays) we can gain some back by
+using it in existing scenarios. It sounds worse than it is because for
+orientations we already have to do some usage checking and we can share that
+check; in most situations nothing needs to be done anyway.
+
+\stopsection
+
+\startsection[title=The low level approach]
+
+When we anchor, a box can be a source and|/|or a target. Both are represented by
+a number and can be assigned via a keyword. These numbers can be picked up by the
+backend. Here is an example:
+
+\startbuffer
+\def\TestMe#1{%
+    \setbox \scratchbox \ruledvbox
+        source 123
+        orientation #1
+        \bgroup
+            \hsize7cm
+            \samplefile{zapf}
+            \hbox to 0pt
+                source 124 target 123
+                xoffset 20pt yoffset -30pt
+                {\darkred \bfc TEST1}%
+            \hbox to 0pt
+                source 125 target 124
+                xoffset 10pt yoffset -20pt
+                {\darkblue \bfc TEST2}%
+        \egroup
+    \box \scratchbox
+}
+\stopbuffer
+
+\typebuffer \getbuffer
+
+This example also uses a few offsets. The \quote {origin} is at the left edge of
+the baseline. Now, we could have passed the source and target as attribute and
+intercepting an attribute in the backend can work pretty well. However, the code
+that deals with the final result of the typesetting and thereby flushes it to for
+instance a \PDF\ file is, at least that is the setup we use in \CONTEXT,
+attribute agnostic. Mixing in attributes at that stage, except for user nodes and
+whatsits that are effectively plugins, is counter intuitive and all is already
+pretty complex so a clear separation of functionality makes a lot of sense. Of
+course the \CONTEXT\ approach is not the only one when it comes to generic engine
+functionality. Not that many fundamental (conceptual) extensions showed up over
+the last few decades so no one will bother if in \LUAMETATEX\ we have new stuff
+that is only used by \CONTEXT. The example code shown here gives:
+
+\startbuffer[four]
+\startcombination[4*1]
+    {\scale[sx=.4,sy=.4]{\TestMe{0}}} {\type {orientation 0}}
+    {\scale[sx=.4,sy=.4]{\TestMe{1}}} {\type {orientation 1}}
+    {\scale[sx=.4,sy=.4]{\TestMe{2}}} {\type {orientation 2}}
+    {\scale[sx=.4,sy=.4]{\TestMe{3}}} {\type {orientation 3}}
+\stopcombination
+\stopbuffer
+
+\startlinecorrection
+\dontcomplain\getbuffer[four]
+\stoplinecorrection
+
+In order to avoid additional shifting around, which then might involve copying
+and injecting boxes as well as repackaging, two additional keys are available
+and these deal with the way boxes get anchored.
+
+\startbuffer
+\vbox
+    source 123
+    \bgroup
+        \offinterlineskip
+        \blackrule[width=4cm,height=2cm,depth=0cm,color=darkred]\par
+        \blackrule[width=4cm,height=0cm,depth=1cm,color=darkblue]\par
+        \setbox\scratchboxtwo\hbox
+            anchors "0004 "0001
+          % anchor "00040001
+            target 123
+            orientation 1
+            {\blackrule[width=2cm,height=1cm,depth=0cm,color=darkgreen]%
+             \hskip-2cm
+             \blackrule[width=2cm,height=0cm,depth=1cm,color=darkyellow]}%
+          %
+        \smash{\box\scratchboxtwo}%
+    \egroup
+\stopbuffer
+
+\typebuffer
+
+The anchor is just an number but with the plural keyword we can scan it as two
+because that is a bit easier on usage. The two numbers four byte numbers control
+the source to target anchoring and there is plenty room for future extensions
+because not all bits are used.
+
+\starttabulate[|lT|lT|]
+\NC 0x00\uchexnumber\leftoriginlistanchorcode    \NC left    origin \NC \NR
+\NC 0x00\uchexnumber\leftheightlistanchorcode    \NC left    height \NC \NR
+\NC 0x00\uchexnumber\leftdepthlistanchorcode     \NC left    depth  \NC \NR
+\NC 0x00\uchexnumber\rightoriginlistanchorcode   \NC right   origin \NC \NR
+\NC 0x00\uchexnumber\rightheightlistanchorcode   \NC right   height \NC \NR
+\NC 0x00\uchexnumber\rightdepthlistanchorcode    \NC right   depth  \NC \NR
+\NC 0x00\uchexnumber\centeroriginlistanchorcode  \NC center  origin \NC \NR
+\NC 0x00\uchexnumber\centerheightlistanchorcode  \NC center  height \NC \NR
+\NC 0x00\uchexnumber\centerdepthlistanchorcode   \NC center  depth  \NC \NR
+\NC 0x00\uchexnumber\halfwaytotallistanchorcode  \NC halfway total  \NC \NR
+\NC 0x00\uchexnumber\halfwayheightlistanchorcode \NC halfway height \NC \NR
+\NC 0x00\uchexnumber\halfwaydepthlistanchorcode  \NC halfway depth  \NC \NR
+\NC 0x00\uchexnumber\halfwayleftlistanchorcode   \NC halfway left   \NC \NR
+\NC 0x00\uchexnumber\halfwayrightlistanchorcode  \NC halfway right  \NC \NR
+\stoptabulate
+
+The target and source are handled in a way that sort of naturally binds them
+which involves a little juggling with dimensions in the backend. There is some
+additional control over this but usage is not advertized here because it might
+change.
+
+% \negatexlistsigncode \negateylistsigncode \negatelistsigncode
+
+One can set these anchoring related properties with keywords but there are also
+primitive box manipulators: \type {\boxanchor}, \type {\boxanchors}, \type
+{\boxsource} and \type {\boxtarget} that take a box number and value.
+
+\startlinecorrection
+\getbuffer
+\stoplinecorrection
+
+There are some helpers at the \LUA\ end but I haven't completely made up my mind
+about them. Normally that evolves with usage.
+
+\stopsection
+
+\startsection[title={A first higher level interface}]
+
+Exploring this here in more detail makes no sense because it is still
+experimental and also rather \CONTEXT\ specific. As a teaser an interface that
+hooks into layers is shown:
+
+\startbuffer
+\defineanchorboxoverlay[framed]
+
+\def\DemoAnchor#1#2#3#4%
+  {\setanchorbox
+     [#1]%
+     [target={#3},source={#4}]%
+     \hbox{\backgroundline[#2]{\white\smallinfofont\setstrut\strut target=#3 source=#4}}}
+
+\def\DemoAnchorX#1#2%
+  {\DemoAnchor{#1}{darkred}   {#2}{left,top}%
+   \DemoAnchor{#1}{darkblue}  {#2}{left,bottom}%
+   \DemoAnchor{#1}{darkgreen} {#2}{right,bottom}%
+   \DemoAnchor{#1}{darkyellow}{#2}{right,top}}%
+
+\startsetups framed:demo
+    \DemoAnchorX{framed:background}{left,top}%
+    \DemoAnchorX{framed:background}{right,top}%
+    \DemoAnchorX{framed:background}{left,bottom}%
+    \DemoAnchorX{framed:background}{right,bottom}%
+    \DemoAnchorX{framed:foreground}{middle}%
+\stopsetups
+
+\midaligned\bgroup
+    \framed
+      [align=normal,
+       width=.7\textwidth,
+       backgroundcolor=gray,
+       background={color,framed:background,foreground,framed:foreground}]
+      \bgroup
+        \samplefile{zapf}\par
+        \directsetup{framed:demo}%
+        \samplefile{zapf}%
+      \egroup
+\egroup
+\stopbuffer
+
+\typebuffer
+
+Those familiar with \CONTEXT\ will recognize the approach. This one basically is
+a more low level variant of layers and a high level variant of the primitives.
+Performance wise (in terms of memory usage and runtime) it sits in a sweet spot.
+
+\startlinecorrection[2*big]
+    \getbuffer
+\stoplinecorrection
+
+I played a bit with a mechanism that can store the embedded (to be anchored)
+content in a more independent way and it actually works okay. However, I'm not
+entirely sure if that solution is the best so for now it's commented. As usual it
+is also up to users to come up with demands.
+
+\stopsection
+
+\stopchapter
+
+\stopcomponent
+
+% \defineanchorbox[page:background]
+% \defineanchorbox[page:foreground]
+% \defineoverlay[page:background][\overlayanchorbox{page:background}]
+% \defineoverlay[page:foreground][\overlayanchorbox{page:foreground}]
+%
+% \defineanchorboxoverlay[page]
+%
+% \setupbackgrounds[page][background={page:background,foreground,page:foreground}]
+%
+% test
+%
+% \setanchorbox[page:background]\ruledhbox
+%     xoffset 200pt
+%     yoffset 100pt
+% %     anchors  \halfwayleftlistanchorcode \halfwayrightlistanchorcode
+%     {\blue DOES IT WORK}
+%
+% \setanchorbox[page:foreground]\ruledhbox
+%     orientation 2
+% %     anchors  \halfwayleftlistanchorcode \halfwayrightlistanchorcode
+%     {\red DOES IT WORK}
+%
+
+% \registeranchorbox[demo][before]\ruledhbox
+% \registeranchorbox[demo][after]\ruledhbox
+%
+% \defineanchorbox[demo]
+%
+% \startbuffer
+% \vbox
+%     source 123
+%     \bgroup
+%         \offinterlineskip
+%         \blackrule[width=4cm,height=2cm,depth=0cm,color=darkred]\par
+%         \blackrule[width=4cm,height=0cm,depth=1cm,color=darkblue]\par
+%         \registeranchorbox[demo][before]\ruledhbox
+%       % \registeranchorbox[demo][after]\ruledhbox
+%             anchors "0004 "0001
+%           % anchor "00040001
+%             target 123
+%             orientation 1
+%             {\blackrule[width=2cm,height=1cm,depth=0cm,color=darkgreen]%
+%              \hskip-2cm
+%              \blackrule[width=2cm,height=0cm,depth=1cm,color=darkyellow]}%
+%           %
+%         \smash{\box\scratchboxtwo}%
+%     \egroup
+% \stopbuffer
+%
+% \typebuffer
diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-dk.tex b/doc/context/sources/general/manuals/ontarget/ontarget-dk.tex
new file mode 100644
index 000000000..5d57da1b7
--- /dev/null
+++ b/doc/context/sources/general/manuals/ontarget/ontarget-dk.tex
@@ -0,0 +1,90 @@
+% language=us runpath=texruns:manuals/ontarget
+
+\startcomponent ontarget-dk
+
+\environment ontarget-style
+
+\startchapter[title={A new unit: \type {dk}}]
+
+At the \CONTEXT\ 2021 meeting I mixed my \TEX\ talks with showing some of the
+(upcoming) \LUAMETATEX\ source code. One evening we had a extension party where a
+new unit was implemented, the \type {dk}. This event was triggered by a remark
+Hraban [Ramm] made on the participants list in advance of the meeting, where he pointed
+to a Wikipedia article from which we quote:
+
+\startquotation
+In issue 33, Mad published a partial table of the \quotation {Potrzebie System of
+Weights and Measures}, developed by 19|-|year|-|old Donald~E. Knuth, later a famed
+computer scientist. According to Knuth, the basis of this new revolutionary
+system is the potrzebie, which equals the thickness of Mad issue 26, or
+2.2633484517438173216473 mm [\dots].
+\stopquotation
+
+So, as the result of that session, the source code now has this comment:
+
+\startquotation
+We support the Knuthian Potrzebie, cf.\ \typ
+{en.wikipedia.org/wiki/Potrzebie}, as the \type {dk} unit. It was added on
+2021-09-22 exactly when we crossed the season during an evening session at the
+15\high {th} \CONTEXT\ meeting in Bassenge (Boirs) Belgium. It took a few
+iterations to find the best numerator and denominator, but Taco Hoekwater, Harald
+Koenig and Mikael Sundqvist figured it out in this interactive session. The error
+messages have been adapted accordingly and the scanner in the \LUA\ \type {tex}
+library also handles it. One \type {dk} is 6.43985pt. There is no need to make
+\METAPOST\ aware of this unit because there it is just a numeric multiplier in a
+macro package.
+\stopquotation
+
+When compared to the already present units the \type {dk} nicely fills a gap:
+
+\def\TheUnit#1{
+    \NC \type {#1}
+    \NC \withoutpt\dimexpr1#1\relax
+    \NC \number\dimexpr1#1\relax
+    \NC \vrule width 1#1 height 1.5ex depth .5ex\relax
+    \NC \NR
+}
+
+\starttabulate[|c|cg{.}|r|l|]
+    \BC unit \BC points \BC scaled \BC visual \NC \NR
+    \TheUnit{sp}
+    \TheUnit{pt}
+    \TheUnit{bp}
+    \TheUnit{dd}
+    \TheUnit{mm}
+    \TheUnit{dk}
+    \TheUnit{pc}
+    \TheUnit{cc}
+    \TheUnit{cm}
+    \TheUnit{in}
+	
+   %\TheUnit{em}
+   %\TheUnit{ex}
+   %\TheUnit{mu}
+   %\TheUnit{px}
+\stoptabulate
+
+Deep down, the unit scanner uses a numerator and denominator in order
+to map the given value onto the internally used scaled points, so the
+relevant snippet of \CCODE\ is:
+
+\starttyping
+*num   = 49838; // 152940;
+*denom =  7739; //  23749;
+return normal_unit_scanned;
+\stoptyping
+
+The impact on performance of scanning an additional unit can be neglected because
+the scanning code is a bit different from the code in \LUATEX\ and (probably the)
+other engines anyway.
+
+Under consideration are a few extra units in the \type {relative_unit_scanned}
+category that we see in \CSS: \type {vw} (relative to the \type {\hsize}), \type
+{vh} (relative to the \type {\vsize}), maybe a percentage (but of what) and \type
+{ch} (width of the current zero digit character). As usual with \TEX ies,
+once it's there it will be (ab)used.
+
+\stopchapter
+
+\stopcomponent
+
diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-eventually.tex b/doc/context/sources/general/manuals/ontarget/ontarget-eventually.tex
new file mode 100644
index 000000000..6787b30f2
--- /dev/null
+++ b/doc/context/sources/general/manuals/ontarget/ontarget-eventually.tex
@@ -0,0 +1,375 @@
+% language=us runpath=texruns:manuals/ontarget
+
+\startcomponent ontarget-eventually
+
+\environment ontarget-style
+
+\startchapter[title={Eventually 1.0}]
+
+\startsection[title=Reflection]
+
+This is just a short reflection on how we came to version 1.0 of \LUAMETATEX.
+Much has already been said in articles and history documents. There is nothing
+in here that is new but I just occasionally like to wrap up the current state.
+At the time of writing, which happens to be the \CONTEXT\ 2021 meeting, we're
+somewhere between 0.9 and 1.0 and as usual it reflects a current state of mind.
+
+\stopsection
+
+\startsection[title=Introduction]
+
+The development on \LUAMETATEX\ took a bit more time than I had in planned when I
+started with it. I presume that it also relates to the way the \TEX\ program is
+looked at: a finished program that converges to a bugless state. But, with
+version 1.0 near by it makes sense to reflect on the process. Before I go into
+details I want to remark that when I wrote \CONTEXT\ I looked at this program
+from the macro end. I had no real reason to look into the code, and figuring out
+what happens in a black box is a challenge (and kind of game) in itself. At the
+time I started using \TEX\ I had done my share of complex and relatively large
+scale programming in \PASCAL\ and \MODULA\ so it's not that I was afraid of
+languages. It was before the Internet took off and not being in academia and
+connected one had to figure things out anyway. I did have Don's 5 volume \TEX\
+series but stuck to the \TEX\ book. Being on \MSDOS\ I couldn't compile the
+program anyway, definitely not without the source at hand. I did read the first
+chapters of the \METAFONT\ book, but apart from being intrigued by it, it was not
+before I ran into \METAPOST\ that knowing that language took off. Of course I had
+browsed \TEX\ the program but not in a systematic way.
+
+I was involved with \PDFTEX\ development but stayed at my end of the line: needs,
+applications, testing and suggestions. With \LUATEX\ that line got crossed,
+triggered by the \LUA\ interfaces, but while I focussed on the \TEX\ end, Taco
+did the \CCODE, and we had pleasant and intense daily discussion on how to move
+forward. I could not get away any longer with the abstraction but had to deal
+with nodes and such, which was okay as we were hit the boundaries of convenience
+programming solutions in \CONTEXT.
+
+When we started our \LUATEX\ journey the \TEX\ follow|-|up most widely used,
+\PDFTEX, did have some \ETEX\ extensions but in retrospect only a few of those
+were of relevance to us, like the concept of \type {\protected} macros \footnote
+{In \CONTEXT\ we always had a protection mechanism and from the \LUATEX\ source I
+learned that the macro bases solution was basically the same as the one used in
+the engine.} and the larger set of registers. And the \ETEX\ project, in spite of
+occasional discussions, never became a continuous effort. The \NTS\ project that
+was related to \ETEX\ and had as objective an extensible successor produced a
+\JAVA\ implementation but that one was never useful (as a starter, its
+performance was such that it could not be used) and I didn't really look forward
+to spending time on \JAVA\ anyway. Taco and I played with an extended \ETEX\ but
+lack of time made that one end up in the archive.
+
+There were some programmatic additions to \PDFTEX\ but it's main attributes were
+protrusion, expansion and a \PDF\ backend (\THANH's thesis subject). Features
+like position tracking were handy but basically just a built|-|in variant of a
+concept we already had come up with at the \DVI\ level (using a postprocessing
+script that later became \type {dvipos}). There was \OMEGA\ with a directional
+model but this engine was always more of an academic project, not a production
+system. \footnote {\ALEPH\ was more reliable but never took off, if only because
+\PDFTEX\ had a backend.} It was \XETEX\ that moved the \TEX\ world into the
+\UNICODE\ domain and opened the engine up to new font technologies. Although
+\UTF8\ was already doable in earlier engines (which is why \CONTEXT\ used it
+already for some internals), native support was way more convenient.
+
+It was clear that if we wanted to move on we had to make more fundamental steps,
+but in such a way that it still fit in with what people expect from \TEX. While
+it started an a playground by embedding the \LUA\ interpreter, it quickly became
+clear that we could open up the internals in fundamental ways, thereby also
+getting around the discussion about to what extent \TEX\ could and should be
+extended: that discussion could be and was postponed by the opening up. Because
+we already foresaw some of possibilities it was decided to freeze \CONTEXT\ for
+the older engines. It was around the first \CONTEXT\ meeting that the \MKII\ and
+\MKIV\ tags showed up, around the same time that \LUATEX\ became useable. More
+than a decade later, when \LUATEX\ basically had become frozen, at another
+meeting it was decided to move on with \LUAMETATEX: the \LUATEX\ project was
+pretty much a \CONTEXT\ projects and that follow up would be even more driven by
+\CONTEXT\ users and usage. But how does it all feel 15 years later? I'll try to
+summarize that below. It will also explain why I got more audacious in extending
+the \LUATEX\ engine into what is now \LUAMETATEX. This also related to the fact
+that at some point I realized that progress just demands taking decisions, and it
+happens that we can make these in the perspective of \CONTEXT\ without side
+effects for other \TEX\ usage. It is also fun to experiment.
+
+\stopsection
+
+\startsection[title=Extending necessary parts]
+
+The \PDFTEX\ program, having a backend built in already supports the usage of
+wide \TRUETYPE\ but it was \XETEX\ that first provided using them directly in the
+frontend. But that happened within the concept of traditional \TEX, especially
+when it comes to math. There are some extra primitives to deal with scripts and
+languages but (and this is personally) I decided that these didn't really fit in
+the way \CONTEXT\ looks at things so \MKII\ doesn't support anything beyond the
+fonts. The \XETEX\ program first was available on Apple computers and font
+support was closely related to its technology as well as technologies that relate
+to where the program originates. Later other operating systems became supported
+too.
+
+We decided in \LUATEX\ to delegate \quote {everything fonts} to \LUA, for a good
+reason: we didn't want to be platform dependent. And using libraries has the
+danger of periodical enforced fundamental changes because in these times software
+politics and fashion have short cycles. The fact that \XETEX\ later changed the
+font engine proved that this was a good decision. At some point \LATEX\ decided
+to use a special version of \LUATEX\ that uses a font library as alternative,
+which is fine, but that also introduces a dependency (and frequent updating of
+the binary). The \LUATEX\ engine has a slim variant of the \FONTFORGE\ library
+built in for reading various font formats and its backend can embed subsets of
+\OPENTYPE, \TYPEONE\ and traditional bitmap fonts. At some point \CONTEXT\
+switched to its own \LUA\ based font file interpreter and experimented with a
+\LUA\ based backend that later became exclusive for \LUAMETATEX. It became clear
+that we could do with less code in the engine and thereby less dependencies.
+
+In this perspective it is also good to notice that the \LUATEX\ engine has no
+real concept of \UNICODE: it just expects \UTF8\ and that's it. All internals
+provide enough granularity to support \UNICODE. The rest has to come from the
+macro package, as we know that each one does it its own way. There are no
+dependencies on \UNICODE\ libraries. You only have to look at what ends up on
+your system when you install a program that just juggles bytes to notice that by
+including one library a whole lot gets drawn in, most of which is not relevant to
+the program and we don't want that. It might start small but who knows where
+one ends up. If we want users to be able to compile the program, we don't want
+to end up in dependency hell.
+
+The \LUATEX\ project was, apart from curiosity and potential usage in \CONTEXT,
+initially also driven by the Oriental \TEX\ project that aimed at high quality
+bidirectional typesetting. There the focus was on fonts as well as processing
+paragraphs. That triggered all kinds of opening up of internals and once
+\CONTEXT\ started swapping (and adding) mechanisms using \LUA\ more came to
+fruit. In the end it took a decade to reach version 1.0 and we could have stopped
+there knowing that we're quite prepared for the future.
+
+Although the whole \TEX\ concept didn't change, there were some fundamental
+changes. From the documentation by Don Knuth it becomes clear that interpreting
+is closely interwoven with typesetting: the so called main interpretation loop
+calls out to font processing, ligature building, hyphenation, kerning, breaking
+lines, processing pages, etc. In \LUATEX\ these steps became more independent
+simply because the processing of fonts (via \LUA) came down to feeding a linked
+list of nodes to a callback function. That list should be hyphenated if needed (a
+now separated step) and if needed the traditional font processing could be
+applied (ligature building and kerning). But, although one can say that we
+already got away from the way \TEX\ works internally, most documentation to the
+original program still applied, simply because the fundamental approach was the
+same. We didn't feel too guilty about it and I don't think anyone objected. By
+the way, the same is true for the math subsystem: we had to adapt it to
+\OPENTYPE\ parameters and formula construction and although that was inspired by
+\TEX\ it definitely was different, even to the extend that the math fonts that
+evolved in the community are now a strange hybrid of old and new.
+
+\stopsection
+
+\startsection[title=Getting around the frozen machinery]
+
+So why did the \LUAMETATEX\ project started at all? There has been plenty written
+on how \LUATEX\ evolved and the same is true for \LUAMETATEX\ so I'm not going to
+repeat that here. It is enough to know that the demand for a stable and frozen
+\LUATEX\ by other users than \CONTEXT\ simply doesn't go well with further
+experiments and we still had plenty ideas. Because at some point Taco had no time
+I was already responsible for quite some additions to the \LUATEX\ program so it
+was no big deal to switch to a an even more extensive mix of working with
+\quotation {\TEX\ the macro language} and \quotation {\TEX\ the program}.
+
+The first priorities were with some basic cleanup: remove unused font code, get
+rid of some ever changing libraries and remove the backend related code. I could
+do that because I already had a \LUA\ driven backend in \MKIV\ (which was removed
+later on) and font handling was already all done in \LUA. The idea was to go lean
+and mean, and indeed, even with all kind of extensions, the binary is much
+smaller than its predecessor, which is nice because it is also a \LUA\ engine.
+Simplifying the build so that users can easily compile themselves was also of
+high priority because I considered the rather large and complex setup as a time
+bomb. And I also had my doubts if we could prevent the \LUATEX\ engine to evolve
+over time in a way that made it less useable for \CONTEXT.
+
+But, interestingly all this extending and pruning didn't feel like I was
+violating the concept of a long term stable engine. In fact, original \TEX\ has
+no backend either, just a simple binary serialization of output (\DVI). And by
+removing some font related frontend code we actually came closer to the original.
+I suppose that these decisions slowly made me aware of the fact that there was no
+reason to not consider more drastic extensions. After all, wasn't the \ETEX\
+project also about extending. \footnote {Although non of the ideas that Taco and
+I discussed on our numerous trips to meetings all over the world ever made it
+into that engine.}
+
+When we look at \LUAMETATEX\ 1.0 we still see the expected machinery there but
+many subsystems have been extended. Once I made the decision that it's now or
+never, each subsystem got evaluated against my long term wish list and usage in
+\CONTEXT. Now, let's be clear: I basically can do all I want in \LUATEX\ but that
+doesn't mean it's always a pretty solution. And to make the \CONTEXT\ code base
+better to understand for users, even if it is already rather consistent and set
+up to be readable, is one of my objectives. I spend a lot of time on readability:
+I cannot stand a bad looking source and over time the look and feel is also
+determined by the way the \CONTEXT\ interfaces and related syntax highlighting
+evolved, especially the \TEX, \METAPOST, \LUA\ mix. This is why \LUAMETATEX\ has
+some extensions to the macro language.
+
+So, while some might argue that \quotation {It can already be done.} I decided to
+ignore that argument when the actual solutions came too close to \quotation {See
+how well I can do this using dirty tricks!}. If we can do better, without harming
+the system, let's do it: \LUA\ did it, \CCODE\ did it and even Don Knuth switched
+from \PASCAL\ to \CCODE . If we want we can put all the extensions under the
+\quotation {\TEX\ is meant to be extended} umbrella, as long as we call it
+different, which is what we do. But I admit that one has to (emotionally) cross a
+boundary of feeling comfortable with fundamental additions to a program like
+\TEX. But I've been around long enough to not feel guilty about it.
+
+So in the end that means that for instance marks were extended, inserts got more
+options, glyphs and boxes have way more properties, (the result and handling of)
+paragraphs can be better controlled, page breaking got hooks (and might be
+extended), local boxes got redone, adjustments were extended, the math machinery
+has been completely opened up, hyphenation became more powerful, the font
+mechanism got more control and new scaling features, alignments got some
+extensions, we can do more with boxes, etc. But often I still first had to
+convince myself that it's okay to do so. After all, none of this had happened
+before and to my knowledge also has not been considered in ways that resulted in
+an implementation (but I might be wrong here). It helps that I can test out
+experiments in production versions of \LMTX\ and that users are quite willing to
+test.
+
+\stopsection
+
+\startsection[title=Extending the macro language]
+
+In the previous section some mechanisms were mentioned, but before \TEX\ even
+ends up there macros and primitives come into play. The \LUATEX\ engine already
+has some handy extras, like ways to prepend and append tokens and a limited so
+called \quote {local control} mechanism (think of nested main loops). There are
+some new look head and expansions related primitives and csname related tricks.
+There are a few more conditionals too. Details can be found in manual and
+articles.
+
+In \LUAMETATEX\ some more got added and some of these mechanism could be improved
+and the reason again is that I aim at readable code. Most programming languages
+for instance have conditionals with some kind of continuation (like \type
+{elseif}) and so I added that to \TEX\ too \type {\orelse}. Actually, there are
+even more new conditionals than in \LUATEX. Yes, we don't really need these,
+especially because in \LUAMETATEX\ we can now extend the primitive language via
+\LUA, but I wanted to improve readability deep down in \CONTEXT. It also reduces
+the clutter when logging, although logging itself has been quite a bit
+overhauled. There is less need for intermediate (often not that natural)
+intermediate layers when we can do it properly in primitive \TEX\ lingua.
+
+More fundamental was extending the way \TEX\ deals with macro arguments. Although
+the extensions to parsing them are using specifiers that make them upward
+compatible I admit that even I have to consult a list of possibilities every now
+and then but in the end they make things better (performance wise with less
+code). As a side effect the macro machinery could be optimized a bit (expansion
+as well as the save stacking).
+
+There are a few more ways to store integers and dimensions (these fit in nicely),
+there are new into grouping, some primitives have more keywords and
+therefore scanners have been extended, the \ETEX\ expression handlers have
+alternative variants.
+
+Although this is a sensitive aspect of \TEX\ when it comes to compatibility, at
+some point I decided that it made no sense to not expose more details about
+nodes, input, and nesting states. The grouping and input related stacks had been
+optimized in the meantime so reporting in that area was already not compatible.
+Improving logging is an ongoing effort and I don't really loose sleep over it not
+being compatible, as long as it gets better. There is now also some tracing for
+marks, inserts, math and alignments.
+
+\stopsection
+
+\startsection[title=Refactoring the code base]
+
+This is again an emotionally laden decision: what to touch and keep. For sure we
+keep the original comments but that doesn't make it literate. We started out with
+a \CCODE\ base that came from converted \PASCAL\ \WEB.
+
+The input machinery is a bit different due to the fact that \LUA\ can (and often
+has to) kick in. In \LUAMETATEX\ it's even more different because even more goes
+via \LUA. We cannot even run the engine without a basic set of callbacks
+assigned: if you don't like that, use \LUATEX. Does this violate the \TEX\
+concept? Not really, because system dependencies are explicitly mentioned as such
+in the source code. We have to adapt to the way an operating system sees files
+anyway (eight bit, \UTF8, \UTF16).
+
+We still have many global variables (a practical Knuth thing I guess) but now
+they are grouped into structures so that we can more clearly see where they
+belong. This involved quite a but of shuffling and editing but I got there. In
+\LUAMETATEX\ all constants (coded in macros) became enumerations, and all hard
+coded values too which was quite a bit of work too. Probably no one will notice
+or realize that, but starting from an existing code base is more work than
+starting from scratch, which is what I always did so far. When possible we use
+case statements. Most macros became (inline) functions. Complex functions got
+better variable names. All functions are in name spaces. This was (and is) a
+stepwise process that takes lots of time, especially because \CONTEXT\ users
+expect a reasonable stable system and changes like that are sensitive for errors.
+
+Talking of errors, the error and reporting system has been overhauled, so for
+instance we have now a dedicated string formatter. This all happened in several
+steps: normalization, consistency, abstraction, formatters, etc. Keep in mind
+that we not only have the original messages but also new ones. And we have \TEX,
+\LUA\ and \METAPOST\ communicating with the user. Where in \LUATEX\ we have to
+conform more to the traditional engine, because that is what other macro packages
+rely on, In \CONTEXT\ we have more freedom, so we can make it better and more
+detailed. Of course it could all be controlled by configurations but at some
+point I decided to kick out variables doing that because it made no sense to
+complicate the code base.
+
+Memory management has been overhauled (more dynamic) as has dumping to the (more
+efficient) format file. With what is mentioned in the previous paragraphs we can
+safely say that in the meantime back porting to \LUATEX\ (which I had in mind)
+makes no sense any longer. There is occasionally some pressure to let \LUATEX\ do
+the same as other engines (new common features) and that doesn't always fit into
+the model. There is no need for \LUAMETATEX\ to follow up on that because often
+we already have plenty of possibilities. There is of course still work todo, for
+instance I still have to make some variable names in functions more verbose but
+that is not fundamental. I also have to go over the documentation in the code. I
+might make some interfaces more consistent anyway, so that also would demand
+adaptations. And of course the documentation in general always lags behind.
+
+So far I only mentioned dealing with \TEX, but keep in mind that in \LUAMETATEX\
+we also have an upgraded \METAPOST: only a \LUA\ backend (we can produce \PDF\
+from that other output), no font code, a couple of extensions, more callbacks,
+\IO\ via \LUA. Scanners make extending the language possible and injectors make
+for efficient piping back to \METAPOST. Such extensions are also possible in
+\TEX\ and the \LUAMETATEX\ scanning interfaces have been improved and extended
+too. We have extra callbacks (but some were dropped), more helpers (most
+noticeable in the node namespace), libraries that improve dealing with binary
+files, a reworked token library (which in turn lead to a reorganization of
+command codes in the \TEX\ engine), a few more extensions if \LUA\ file handling
+and string manipulations. We got decimal math, complex math, new compression
+libraries, better (\LUA) memory management, a few optional library interfaces,
+etc. Fortunately that all didn't bloat the binary.
+
+So, because in the meantime \LUAMETATEX\ is quite different from \LUATEX, we can
+consider the last one to be a prototype for the real deal.
+
+\stopsection
+
+\startsection[title=Simplifying the build]
+
+This was one of the first things I did. It was a curious process of removing more
+and more of the original build (all kind of dependencies) which is not entirely
+trivial because of the way the \LUATEX\ build is set up. I admit that I did try
+to stay within the regular source build concept but after a while I realized that
+this made no sense so we (Mojca was involved in that) made the move to \CMAKE.
+Shortly after that I started using Visual Studio as editing environment (which
+saves time and is rather convenient) and native compilation under \MSWINDOWS\
+became possible without any special measures (in fact, setting up the build for
+\ARM\ processors was more work).
+
+A side effect is that right from the start we could provide binaries for various
+platforms via the compile farm on the \CONTEXT\ garden maintained by Mojca, who
+also does daily \TEX\ live builds there. On my machine I use the Windows Linux
+Subsystem for cross compilation but we can also do native builds. And, with my
+laptop being a robust 2013 old timer I force myself to make sure that
+\LUAMETATEX\ keeps performing well.
+
+\stopsection
+
+\startsection[title=Because it just makes sense]
+
+So, in the end \LUAMETATEX\ is likely the engine most different from the Knuthian
+original but from the above one can conclude that this was a graduate process
+where I got more audacious over time. In the end the only thing that matters (and
+I believe that Don Knuth agrees with this) that you like writing the code, feel
+confident that the code is all right, explore the possibilities, try to improve
+the quality and understanding and that successive rewrites can reduce obscurity.
+And in my opinion we didn't loose the \TEX\ look and feel and still can operate
+well within the established boundaries of the \TEX\ ecosystem. The fact that most
+\CONTEXT\ users in the meantime use \LUAMETATEX\ and the related \LMTX\ variant
+is an indication that they are okay with it, and that is what matters most.
+
+\stopsection
+
+\stopchapter
+
+\stopcomponent
diff --git a/doc/context/sources/general/manuals/ontarget/ontarget.tex b/doc/context/sources/general/manuals/ontarget/ontarget.tex
index c66318030..201ed504e 100644
--- a/doc/context/sources/general/manuals/ontarget/ontarget.tex
+++ b/doc/context/sources/general/manuals/ontarget/ontarget.tex
@@ -14,6 +14,9 @@
 
     \startbodymatter
         \component ontarget-introduction
+        \component ontarget-eventually
+        \component ontarget-dk
+        \component ontarget-anchoring
     \stopbodymatter
 
 \stopdocument
diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua
index 12645e462..2224345ea 100644
--- a/scripts/context/lua/mtxrun.lua
+++ b/scripts/context/lua/mtxrun.lua
@@ -9251,7 +9251,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-prs"] = package.loaded["util-prs"] or true
 
--- original size: 24844, stripped down to: 16451
+-- original size: 24913, stripped down to: 16497
 
 if not modules then modules={} end modules ['util-prs']={
  version=1.001,
@@ -9309,11 +9309,12 @@ local nestedbrackets=P { lbracket*(nobracket+V(1))^0*rbracket }
 local spaces=space^0
 local argument=Cs((lbrace/"")*((nobrace+nestedbraces)^0)*(rbrace/""))
 local content=(1-endofstring)^0
-lpegpatterns.nestedbraces=nestedbraces  
-lpegpatterns.nestedparents=nestedparents 
-lpegpatterns.nested=nestedbraces  
-lpegpatterns.argument=argument   
-lpegpatterns.content=content    
+lpegpatterns.nestedbraces=nestedbraces   
+lpegpatterns.nestedparents=nestedparents  
+lpegpatterns.nestedbrackets=nestedbrackets 
+lpegpatterns.nested=nestedbraces   
+lpegpatterns.argument=argument    
+lpegpatterns.content=content  
 local value=lbrace*C((nobrace+nestedbraces)^0)*rbrace+C((nestedbraces+(1-comma))^0)
 local key=C((1-equal-comma)^1)
 local pattern_a=(space+comma)^0*(key*equal*value+key*C(""))
@@ -25948,8 +25949,8 @@ end -- of closure
 
 -- used libraries    : l-bit32.lua l-lua.lua l-macro.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-sha.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua util-soc-imp-reset.lua util-soc-imp-socket.lua util-soc-imp-copas.lua util-soc-imp-ltn12.lua util-soc-imp-mime.lua util-soc-imp-url.lua util-soc-imp-headers.lua util-soc-imp-tp.lua util-soc-imp-http.lua util-soc-imp-ftp.lua util-soc-imp-smtp.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua util-zip.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua libs-ini.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 1029803
--- stripped bytes    : 405638
+-- original bytes    : 1029872
+-- stripped bytes    : 405661
 
 -- end library merge
 
diff --git a/scripts/context/stubs/mswin/mtxrun.lua b/scripts/context/stubs/mswin/mtxrun.lua
index 12645e462..2224345ea 100644
--- a/scripts/context/stubs/mswin/mtxrun.lua
+++ b/scripts/context/stubs/mswin/mtxrun.lua
@@ -9251,7 +9251,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-prs"] = package.loaded["util-prs"] or true
 
--- original size: 24844, stripped down to: 16451
+-- original size: 24913, stripped down to: 16497
 
 if not modules then modules={} end modules ['util-prs']={
  version=1.001,
@@ -9309,11 +9309,12 @@ local nestedbrackets=P { lbracket*(nobracket+V(1))^0*rbracket }
 local spaces=space^0
 local argument=Cs((lbrace/"")*((nobrace+nestedbraces)^0)*(rbrace/""))
 local content=(1-endofstring)^0
-lpegpatterns.nestedbraces=nestedbraces  
-lpegpatterns.nestedparents=nestedparents 
-lpegpatterns.nested=nestedbraces  
-lpegpatterns.argument=argument   
-lpegpatterns.content=content    
+lpegpatterns.nestedbraces=nestedbraces   
+lpegpatterns.nestedparents=nestedparents  
+lpegpatterns.nestedbrackets=nestedbrackets 
+lpegpatterns.nested=nestedbraces   
+lpegpatterns.argument=argument    
+lpegpatterns.content=content  
 local value=lbrace*C((nobrace+nestedbraces)^0)*rbrace+C((nestedbraces+(1-comma))^0)
 local key=C((1-equal-comma)^1)
 local pattern_a=(space+comma)^0*(key*equal*value+key*C(""))
@@ -25948,8 +25949,8 @@ end -- of closure
 
 -- used libraries    : l-bit32.lua l-lua.lua l-macro.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-sha.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua util-soc-imp-reset.lua util-soc-imp-socket.lua util-soc-imp-copas.lua util-soc-imp-ltn12.lua util-soc-imp-mime.lua util-soc-imp-url.lua util-soc-imp-headers.lua util-soc-imp-tp.lua util-soc-imp-http.lua util-soc-imp-ftp.lua util-soc-imp-smtp.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua util-zip.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua libs-ini.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 1029803
--- stripped bytes    : 405638
+-- original bytes    : 1029872
+-- stripped bytes    : 405661
 
 -- end library merge
 
diff --git a/scripts/context/stubs/unix/mtxrun b/scripts/context/stubs/unix/mtxrun
index 12645e462..2224345ea 100644
--- a/scripts/context/stubs/unix/mtxrun
+++ b/scripts/context/stubs/unix/mtxrun
@@ -9251,7 +9251,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-prs"] = package.loaded["util-prs"] or true
 
--- original size: 24844, stripped down to: 16451
+-- original size: 24913, stripped down to: 16497
 
 if not modules then modules={} end modules ['util-prs']={
  version=1.001,
@@ -9309,11 +9309,12 @@ local nestedbrackets=P { lbracket*(nobracket+V(1))^0*rbracket }
 local spaces=space^0
 local argument=Cs((lbrace/"")*((nobrace+nestedbraces)^0)*(rbrace/""))
 local content=(1-endofstring)^0
-lpegpatterns.nestedbraces=nestedbraces  
-lpegpatterns.nestedparents=nestedparents 
-lpegpatterns.nested=nestedbraces  
-lpegpatterns.argument=argument   
-lpegpatterns.content=content    
+lpegpatterns.nestedbraces=nestedbraces   
+lpegpatterns.nestedparents=nestedparents  
+lpegpatterns.nestedbrackets=nestedbrackets 
+lpegpatterns.nested=nestedbraces   
+lpegpatterns.argument=argument    
+lpegpatterns.content=content  
 local value=lbrace*C((nobrace+nestedbraces)^0)*rbrace+C((nestedbraces+(1-comma))^0)
 local key=C((1-equal-comma)^1)
 local pattern_a=(space+comma)^0*(key*equal*value+key*C(""))
@@ -25948,8 +25949,8 @@ end -- of closure
 
 -- used libraries    : l-bit32.lua l-lua.lua l-macro.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-sha.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua util-soc-imp-reset.lua util-soc-imp-socket.lua util-soc-imp-copas.lua util-soc-imp-ltn12.lua util-soc-imp-mime.lua util-soc-imp-url.lua util-soc-imp-headers.lua util-soc-imp-tp.lua util-soc-imp-http.lua util-soc-imp-ftp.lua util-soc-imp-smtp.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua util-zip.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua libs-ini.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 1029803
--- stripped bytes    : 405638
+-- original bytes    : 1029872
+-- stripped bytes    : 405661
 
 -- end library merge
 
diff --git a/scripts/context/stubs/win64/mtxrun.lua b/scripts/context/stubs/win64/mtxrun.lua
index 12645e462..2224345ea 100644
--- a/scripts/context/stubs/win64/mtxrun.lua
+++ b/scripts/context/stubs/win64/mtxrun.lua
@@ -9251,7 +9251,7 @@ do -- create closure to overcome 200 locals limit
 
 package.loaded["util-prs"] = package.loaded["util-prs"] or true
 
--- original size: 24844, stripped down to: 16451
+-- original size: 24913, stripped down to: 16497
 
 if not modules then modules={} end modules ['util-prs']={
  version=1.001,
@@ -9309,11 +9309,12 @@ local nestedbrackets=P { lbracket*(nobracket+V(1))^0*rbracket }
 local spaces=space^0
 local argument=Cs((lbrace/"")*((nobrace+nestedbraces)^0)*(rbrace/""))
 local content=(1-endofstring)^0
-lpegpatterns.nestedbraces=nestedbraces  
-lpegpatterns.nestedparents=nestedparents 
-lpegpatterns.nested=nestedbraces  
-lpegpatterns.argument=argument   
-lpegpatterns.content=content    
+lpegpatterns.nestedbraces=nestedbraces   
+lpegpatterns.nestedparents=nestedparents  
+lpegpatterns.nestedbrackets=nestedbrackets 
+lpegpatterns.nested=nestedbraces   
+lpegpatterns.argument=argument    
+lpegpatterns.content=content  
 local value=lbrace*C((nobrace+nestedbraces)^0)*rbrace+C((nestedbraces+(1-comma))^0)
 local key=C((1-equal-comma)^1)
 local pattern_a=(space+comma)^0*(key*equal*value+key*C(""))
@@ -25948,8 +25949,8 @@ end -- of closure
 
 -- used libraries    : l-bit32.lua l-lua.lua l-macro.lua l-sandbox.lua l-package.lua l-lpeg.lua l-function.lua l-string.lua l-table.lua l-io.lua l-number.lua l-set.lua l-os.lua l-file.lua l-gzip.lua l-md5.lua l-sha.lua l-url.lua l-dir.lua l-boolean.lua l-unicode.lua l-math.lua util-str.lua util-tab.lua util-fil.lua util-sac.lua util-sto.lua util-prs.lua util-fmt.lua util-soc-imp-reset.lua util-soc-imp-socket.lua util-soc-imp-copas.lua util-soc-imp-ltn12.lua util-soc-imp-mime.lua util-soc-imp-url.lua util-soc-imp-headers.lua util-soc-imp-tp.lua util-soc-imp-http.lua util-soc-imp-ftp.lua util-soc-imp-smtp.lua trac-set.lua trac-log.lua trac-inf.lua trac-pro.lua util-lua.lua util-deb.lua util-tpl.lua util-sbx.lua util-mrg.lua util-env.lua luat-env.lua util-zip.lua lxml-tab.lua lxml-lpt.lua lxml-mis.lua lxml-aux.lua lxml-xml.lua trac-xml.lua data-ini.lua data-exp.lua data-env.lua data-tmp.lua data-met.lua data-res.lua data-pre.lua data-inp.lua data-out.lua data-fil.lua data-con.lua data-use.lua data-zip.lua data-tre.lua data-sch.lua data-lua.lua data-aux.lua data-tmf.lua data-lst.lua libs-ini.lua luat-sta.lua luat-fmt.lua
 -- skipped libraries : -
--- original bytes    : 1029803
--- stripped bytes    : 405638
+-- original bytes    : 1029872
+-- stripped bytes    : 405661
 
 -- end library merge
 
diff --git a/tex/context/base/mkii/cont-new.mkii b/tex/context/base/mkii/cont-new.mkii
index f0147a089..907bf60cf 100644
--- a/tex/context/base/mkii/cont-new.mkii
+++ b/tex/context/base/mkii/cont-new.mkii
@@ -11,7 +11,7 @@
 %C therefore copyrighted by \PRAGMA. See mreadme.pdf for
 %C details.
 
-\newcontextversion{2021.12.25 00:55}
+\newcontextversion{2021.12.30 19:00}
 
 %D This file is loaded at runtime, thereby providing an
 %D excellent place for hacks, patches, extensions and new
diff --git a/tex/context/base/mkii/context.mkii b/tex/context/base/mkii/context.mkii
index 6632c422d..6e89044ab 100644
--- a/tex/context/base/mkii/context.mkii
+++ b/tex/context/base/mkii/context.mkii
@@ -20,7 +20,7 @@
 %D your styles an modules.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2021.12.25 00:55}
+\edef\contextversion{2021.12.30 19:00}
 
 %D For those who want to use this:
 
diff --git a/tex/context/base/mkii/mult-ro.mkii b/tex/context/base/mkii/mult-ro.mkii
index 65c52c639..cee725d43 100644
--- a/tex/context/base/mkii/mult-ro.mkii
+++ b/tex/context/base/mkii/mult-ro.mkii
@@ -300,6 +300,7 @@
 \setinterfacevariable{july}{iulie}
 \setinterfacevariable{june}{iunie}
 \setinterfacevariable{keep}{mentine}
+\setinterfacevariable{keeptogether}{keeptogether}
 \setinterfacevariable{kerncharacters}{kerncharacters}
 \setinterfacevariable{knockout}{knockout}
 \setinterfacevariable{label}{eticheta}
@@ -1229,7 +1230,7 @@
 \setinterfaceconstant{solution}{solution}
 \setinterfaceconstant{sort}{sort}
 \setinterfaceconstant{sorttype}{sorttype}
-\setinterfaceconstant{source}{sursa}
+\setinterfaceconstant{source}{source}
 \setinterfaceconstant{space}{spatiu}
 \setinterfaceconstant{spaceafter}{spatiudupa}
 \setinterfaceconstant{spaceafterside}{spaceafterside}
@@ -1280,6 +1281,7 @@
 \setinterfaceconstant{synonymcommand}{synonymcommand}
 \setinterfaceconstant{synonymstyle}{stilsinonim}
 \setinterfaceconstant{tab}{tab}
+\setinterfaceconstant{target}{target}
 \setinterfaceconstant{text}{text}
 \setinterfaceconstant{textalign}{textalign}
 \setinterfaceconstant{textalternative}{textalternative}
diff --git a/tex/context/base/mkiv/cont-new.mkiv b/tex/context/base/mkiv/cont-new.mkiv
index 383351dd3..bdb0d03a6 100644
--- a/tex/context/base/mkiv/cont-new.mkiv
+++ b/tex/context/base/mkiv/cont-new.mkiv
@@ -13,7 +13,7 @@
 
 % \normalend % uncomment this to get the real base runtime
 
-\newcontextversion{2021.12.25 00:55}
+\newcontextversion{2021.12.30 19:00}
 
 %D This file is loaded at runtime, thereby providing an excellent place for hacks,
 %D patches, extensions and new features. There can be local overloads in cont-loc
diff --git a/tex/context/base/mkiv/context.mkiv b/tex/context/base/mkiv/context.mkiv
index 3d9e02e03..61f239979 100644
--- a/tex/context/base/mkiv/context.mkiv
+++ b/tex/context/base/mkiv/context.mkiv
@@ -49,7 +49,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \edef\contextformat {\jobname}
-\edef\contextversion{2021.12.25 00:55}
+\edef\contextversion{2021.12.30 19:00}
 
 %D Kind of special:
 
diff --git a/tex/context/base/mkiv/mult-def.lua b/tex/context/base/mkiv/mult-def.lua
index 7389fa9d9..9992de8f6 100644
--- a/tex/context/base/mkiv/mult-def.lua
+++ b/tex/context/base/mkiv/mult-def.lua
@@ -12796,6 +12796,12 @@ return {
    ["pe"]="گام‌وای",
    ["ro"]="ystep",
   },
+  ["source"]={
+    ["en"]="source",
+  },
+  ["target"]={
+    ["en"]="target",
+  },
  },
  ["elements"]={
   ["answerlines"]={
@@ -16460,6 +16466,10 @@ return {
    ["pe"]="نگهدار",
    ["ro"]="mentine",
   },
+  ["keeptogether"]={
+   ["en"]="keeptogether",
+   ["fr"]="conserverensemble",
+  },
   ["kerncharacters"]={
    ["en"]="kerncharacters",
    ["fr"]="approchercaracteres",
diff --git a/tex/context/base/mkiv/mult-low.lua b/tex/context/base/mkiv/mult-low.lua
index 9c4c35037..979fef710 100644
--- a/tex/context/base/mkiv/mult-low.lua
+++ b/tex/context/base/mkiv/mult-low.lua
@@ -116,6 +116,14 @@ return {
         "vadjustparcontextcode", "insertparcontextcode", "outputparcontextcode", "alignparcontextcode",
         "noalignparcontextcode", "spanparcontextcode", "resetparcontextcode",
         --
+        "leftoriginlistanchorcode", "leftheightlistanchorcode", "leftdepthlistanchorcode",
+        "rightoriginlistanchorcode", "rightheightlistanchorcode", "rightdepthlistanchorcode",
+        "centeroriginlistanchorcode", "centerheightlistanchorcode", "centerdepthlistanchorcode",
+        "halfwaytotallistanchorcode", "halfwayheightlistanchorcode", "halfwaydepthlistanchorcode",
+        "halfwayleftlistanchorcode", "halfwayrightlistanchorcode",
+        --
+        "negatexlistsigncode", "negateylistsigncode", "negatelistsigncode",
+        --
         "fontslantperpoint", "fontinterwordspace", "fontinterwordstretch", "fontinterwordshrink",
         "fontexheight", "fontemwidth", "fontextraspace", "slantperpoint",
         "mathexheight", "mathemwidth",
diff --git a/tex/context/base/mkiv/mult-prm.lua b/tex/context/base/mkiv/mult-prm.lua
index 0249b906b..2803448d9 100644
--- a/tex/context/base/mkiv/mult-prm.lua
+++ b/tex/context/base/mkiv/mult-prm.lua
@@ -285,10 +285,15 @@ return {
   "begincsname",
   "beginlocalcontrol",
   "boundary",
+  "boxanchor",
+  "boxanchors",
   "boxattribute",
   "boxdirection",
+  "boxgeometry",
   "boxorientation",
   "boxshift",
+  "boxsource",
+  "boxtarget",
   "boxtotal",
   "boxxmove",
   "boxxoffset",
@@ -496,6 +501,7 @@ return {
   "overloaded",
   "overloadmode",
   "pageboundary",
+  "pageboundarypenalty",
   "pagevsize",
   "parametercount",
   "parametermark",
@@ -544,6 +550,7 @@ return {
   "tracinginserts",
   "tracingmarks",
   "tracingmath",
+  "tracingnodes",
   "undent",
   "unexpandedloop",
   "unletfrozen",
diff --git a/tex/context/base/mkiv/page-sid.mkiv b/tex/context/base/mkiv/page-sid.mkiv
index e6c1be985..88e4fb116 100644
--- a/tex/context/base/mkiv/page-sid.mkiv
+++ b/tex/context/base/mkiv/page-sid.mkiv
@@ -292,7 +292,7 @@
          \box\floatbox
          % somehow we need this \scratchbox magic, but at least it's the same as the
          % tracer now
-         \setbox\scratchbox\emptybox
+         \setbox\scratchbox\emptyhbox
          \wd\scratchbox\hsize
          \ht\scratchbox\d_page_sides_bottomtotal
          \box\scratchbox
diff --git a/tex/context/base/mkiv/status-files.pdf b/tex/context/base/mkiv/status-files.pdf
index 94dd23ff5..5d46013f9 100644
--- a/tex/context/base/mkiv/status-files.pdf
+++ b/tex/context/base/mkiv/status-files.pdf
diff --git a/tex/context/base/mkiv/status-lua.pdf b/tex/context/base/mkiv/status-lua.pdf
index a9934cf42..03cb36fc9 100644
--- a/tex/context/base/mkiv/status-lua.pdf
+++ b/tex/context/base/mkiv/status-lua.pdf
diff --git a/tex/context/base/mkiv/util-prs.lua b/tex/context/base/mkiv/util-prs.lua
index 438fa78bd..204611dbe 100644
--- a/tex/context/base/mkiv/util-prs.lua
+++ b/tex/context/base/mkiv/util-prs.lua
@@ -71,11 +71,12 @@ local spaces         = space^0
 local argument       = Cs((lbrace/"") * ((nobrace + nestedbraces)^0) * (rbrace/""))
 local content        = (1-endofstring)^0
 
-lpegpatterns.nestedbraces  = nestedbraces  -- no capture
-lpegpatterns.nestedparents = nestedparents -- no capture
-lpegpatterns.nested        = nestedbraces  -- no capture
-lpegpatterns.argument      = argument      -- argument after e.g. =
-lpegpatterns.content       = content       -- rest after e.g =
+lpegpatterns.nestedbraces   = nestedbraces   -- no capture
+lpegpatterns.nestedparents  = nestedparents  -- no capture
+lpegpatterns.nestedbrackets = nestedbrackets -- no capture
+lpegpatterns.nested         = nestedbraces   -- no capture
+lpegpatterns.argument       = argument       -- argument after e.g. =
+lpegpatterns.content        = content        -- rest after e.g =
 
 local value     = lbrace * C((nobrace + nestedbraces)^0) * rbrace
                 + C((nestedbraces + (1-comma))^0)
diff --git a/tex/context/base/mkxl/anch-loc.lmt b/tex/context/base/mkxl/anch-loc.lmt
index 054d4dd07..14efab260 100644
--- a/tex/context/base/mkxl/anch-loc.lmt
+++ b/tex/context/base/mkxl/anch-loc.lmt
@@ -327,6 +327,7 @@ implement {
         context(new_usernode(whatever,{ name = name, kind = "sync", x = x, y = y }))
     end
 }
+
 implement {
     name      = "setlocalalignanchor",
     arguments = { "argument", "integerargument", "integerargument", "argument" },
diff --git a/tex/context/base/mkxl/cont-new.mkxl b/tex/context/base/mkxl/cont-new.mkxl
index c7b619601..35e8bf03d 100644
--- a/tex/context/base/mkxl/cont-new.mkxl
+++ b/tex/context/base/mkxl/cont-new.mkxl
@@ -13,7 +13,7 @@
 
 % \normalend % uncomment this to get the real base runtime
 
-\newcontextversion{2021.12.25 00:55}
+\newcontextversion{2021.12.30 19:00}
 
 %D This file is loaded at runtime, thereby providing an excellent place for hacks,
 %D patches, extensions and new features. There can be local overloads in cont-loc
diff --git a/tex/context/base/mkxl/context.mkxl b/tex/context/base/mkxl/context.mkxl
index 91db54550..385a2c13a 100644
--- a/tex/context/base/mkxl/context.mkxl
+++ b/tex/context/base/mkxl/context.mkxl
@@ -29,7 +29,7 @@
 %D {YYYY.MM.DD HH:MM} format.
 
 \immutable\edef\contextformat {\jobname}
-\immutable\edef\contextversion{2021.12.25 00:55}
+\immutable\edef\contextversion{2021.12.30 19:00}
 
 %overloadmode 1 % check frozen / warning
 %overloadmode 2 % check frozen / error
diff --git a/tex/context/base/mkxl/driv-shp.lmt b/tex/context/base/mkxl/driv-shp.lmt
index 0ab9dacc2..620c69484 100644
--- a/tex/context/base/mkxl/driv-shp.lmt
+++ b/tex/context/base/mkxl/driv-shp.lmt
@@ -7,7 +7,7 @@ if not modules then modules = { } end modules ['driv-shp'] = {
     license   = "see context related readme files"
 }
 
-local type, next = type, next
+local type, next, rawget, rawset = type, next, rawget, rawset
 
 local setmetatableindex  = table.setmetatableindex
 local formatters         = string.formatters
@@ -27,6 +27,8 @@ local getdirection       = nuts.getdirection
 local getlist            = nuts.getlist
 local getoffsets         = nuts.getoffsets
 local getorientation     = nuts.getorientation
+local getanchors         = nuts.getanchors
+local getgeometry        = nuts.getgeometry
 local getxyscales        = nuts.getxyscales
 local getwhd             = nuts.getwhd
 local getkern            = nuts.getkern
@@ -94,6 +96,9 @@ local drivers            = drivers
 local report             = logs.reporter("drivers")
 
 ---------------------------------------------------------------------------------------
+-- For the moment rules need at least some height but maybe some day we let user rules
+-- fall through or have some way to force a rule via some property.
+---------------------------------------------------------------------------------------
 
 local lastfont       = nil
 local fontcharacters = nil
@@ -609,23 +614,75 @@ end
 --
 -- local  dirstack = setmetatableindex(dirstackentry)
 --
--- local function reset_dir_stack()
+-- local function reset_directions()
 --     dirstack = setmetatableindex(dirstackentry)
 -- end
 
 local dirstack = { }
+local anchors  = { }
+----- befores  = setmetatableindex("table")
+----- afters   = setmetatableindex("table")
 
-local function reset_dir_stack()
+local function reset_directions()
     dirstack = { }
 end
 
+local function reset_anchors()
+    anchors = { }
+end
+
+-- interfaces.implement {
+--     name      = "registeranchorbox",
+--     arguments = { "integer", "integer", "box" },
+--     actions   = function(anchor,where,box)
+--         box = tonut(box)
+--         if where < 0 then
+--             table.insert(befores[anchor],box)
+--         else
+--             table.insert(afters[anchor],box)
+--         end
+--     end
+-- }
+
 local hlist_out, vlist_out  do
 
-    local function applyanchor(orientation,x,y,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
-        local ot = (orientation>> 0) & 0x0F
-        local ay = (orientation>> 4) & 0x0F
-        local ax = (orientation>> 8) & 0x0F
-        local of = (orientation>>12) & 0x0F
+    local finalize  = nodes.handlers.finalizelist
+ -- local takebox   = nuts.takebox
+    local flushnode = nuts.flushnode
+
+ -- local function flushstored(current,source,before)
+ --     local s = nil
+ --     if before then
+ --         s = rawget(befores,source)
+ --     else
+ --         s = rawget(afters,source)
+ --     end
+ --     if s then
+ --         for i=1,#s do
+ --             local si = s[i]
+ --             if si then
+ --                 finalize(si) -- tricky: we might need to group
+ --                 if getid(si) == vlist_code then
+ --                     vlist_out(current,si)
+ --                 else
+ --                     hlist_out(current,si)
+ --                 end
+ --                 flushnode(si)
+ --                 s[i] = false
+ --             end
+ --         end
+ --         if before then
+ --             rawset(befores,source,nil)
+ --         else
+ --             rawset(afters,source,nil)
+ --         end
+ --     end
+ -- end
+
+    local function applyorientation(orientation,x,y,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
+        local ot = (orientation >> 0) & 0x0F
+        local ay = (orientation >> 4) & 0x0F
+        local ax = (orientation >> 8) & 0x0F
         if ot == 4 then
             ot, ay = 0, 1
         elseif ot == 5 then
@@ -663,7 +720,71 @@ local hlist_out, vlist_out  do
         return ot, x + xoffset, y - yoffset
     end
 
-    drivers.applyanchor = applyanchor
+    local function applyanchor(anchor,shift,anchor_h,anchor_v,width,height,depth)
+        local h = 0
+        local v = 0
+        if shift then
+            anchor = (anchor & 0xFFFF0000) >> 16
+        else
+            anchor = (anchor & 0x0000FFFF)
+        end
+        local a = anchor & 0x00FF
+        local s = anchor & 0x0F00
+        if a == 0x02 then
+            v = height
+        elseif a == 0x03 then
+            v = - depth
+        elseif a == 0x04 then
+            h = width
+        elseif a == 0x05 then
+            h = width
+            v = height
+        elseif a == 0x06 then
+            h = width
+            v = - depth
+        elseif a == 0x07 then
+            h = width/2
+        elseif a == 0x08 then
+            h = width/2
+            v = height
+        elseif a == 0x09 then
+            h = width/2
+            v = - depth
+        elseif a == 0x0A then -- halfway_total_anchor
+            h = width/2
+            v = height/2 - depth/2
+        elseif a == 0x0B then -- halfway_height_anchor
+            h = width/2
+            v = height/2
+        elseif a == 0x0C then -- halfway_depth_anchor
+            h = width/2
+            v = - depth/2
+        elseif a == 0x0D then -- halfway_left_anchor
+            v = height/2 - depth/2
+        elseif a == 0x0E then -- halfway_right_anchor
+            h = width
+            v = height/2 - depth/2
+        end
+        if not shift then
+            h = -h
+            v = -v
+        end
+        if s == 0x100 then
+            h = -h
+        elseif s == 0x200 then
+            v = -v
+        elseif s == 0x300 then
+            h = -h
+            v = -v
+        else
+        end
+        anchor_h = anchor_h + h
+        anchor_v = anchor_v + v
+        return anchor_h, anchor_v
+    end
+
+    drivers.applyanchor      = applyanchor
+    drivers.applyorientation = applyorientation
 
     -- to be checked: begin- or enddir kan nil zijn, weird
 
@@ -745,12 +866,10 @@ local hlist_out, vlist_out  do
                                         local save_h = cur_h
                                         if pos_r == righttoleft_code then
                                             cur_h = ref_h - shipbox_h + cur_h
---                                             cur_h = width * (cur_h // width)
                                             cur_h = width * (cur_h / width)
                                             cur_h = ref_h - shipbox_h - cur_h
                                         else
                                             cur_h = ref_h - shipbox_h - cur_h
---                                             cur_h = width * (cur_h // width)
                                             cur_h = width * (cur_h / width)
                                             cur_h = ref_h - shipbox_h - cur_h
                                         end
@@ -759,7 +878,6 @@ local hlist_out, vlist_out  do
                                         end
                                     elseif subtype == leaders_code then
                                         local save_h = cur_h
---                                         cur_h = width * (cur_h // width)
                                         cur_h = width * (cur_h / width)
                                         if cur_h < save_h then
                                             cur_h = cur_h + width
@@ -768,12 +886,9 @@ local hlist_out, vlist_out  do
                                         lq = gluewidth / width
                                         lr = gluewidth % width
                                         if subtype == cleaders_code then
---                                             cur_h = cur_h + lr // 2
                                             cur_h = cur_h + lr / 2
                                         else
---                                             lx = lr // (lq + 1)
                                             lx = lr / (lq + 1)
---                                             cur_h = cur_h + (lr - (lq - 1) * lx) // 2
                                             cur_h = cur_h + (lr - (lq - 1) * lx) / 2
                                         end
                                     end
@@ -863,57 +978,42 @@ local hlist_out, vlist_out  do
                 local list = getlist(current)
                 if list then
                     local boxdir = getdirection(current) or lefttoright_code
-                    local shift, orientation = getshift(current)
-                    if not orientation then
-                        local basepoint_h = boxdir ~= pos_r and width or 0
-                     -- local basepoint_v = shift
-                        if pos_r == righttoleft_code then
-                            pos_h = ref_h - (cur_h + basepoint_h)
-                        else
-                            pos_h = ref_h + (cur_h + basepoint_h)
-                        end
-                        pos_v = ref_v - shift
-                        -- synced
-                        if id == vlist_code then
-                            vlist_out(current,list)
-                        else
-                            hlist_out(current,list)
-                        end
-                    elseif orientation == 0x1000 then
-                        local orientation, xoffset, yoffset = getorientation(current)
-                        local basepoint_h = boxdir ~= pos_r and width or 0
-                     -- local basepoint_v = shift
-                        if pos_r == righttoleft_code then
-                            pos_h = ref_h - (cur_h + basepoint_h + xoffset)
-                        else
-                            pos_h = ref_h + (cur_h + basepoint_h + xoffset)
-                        end
-                        pos_v = ref_v - (shift - yoffset)
-    --             pushorientation(orientation,pos_h,pos_v,pos_r)
-                        -- synced
-                        if id == vlist_code then
-                            vlist_out(current,list)
-                        else
-                            hlist_out(current,list)
-                        end
-    --             poporientation(orientation,pos_h,pos_v,pos_r)
-                    else
+                    local shift  = getshift(current)
+                    local geometry, hasoffset, hasorientation, hasanchor = getgeometry(current,true)
+                    local anchor, source, target, targetdata
+                    local anc_h, anc_v
+                    local usedorientation = false
+                    if hasanchor then
+                        anchor, source, target = getanchors(current)
+                    end
+                    if hasorientation then
                         local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
-                        local orientation, basepoint_h, basepoint_v = applyanchor(orientation,0,shift,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
+                        local orientation, basepoint_h, basepoint_v = applyorientation(orientation,0,shift,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
                         if orientation == 1 then
                             basepoint_h = basepoint_h + doffset
                             if boxdir == pos_r then
                                 basepoint_v = basepoint_v - height
                             end
+                            usedorientation = orientation
                         elseif orientation == 2 then
                             if boxdir == pos_r then
                                 basepoint_h = basepoint_h + width
                             end
+                            usedorientation = orientation
                         elseif orientation == 3 then
                             basepoint_h = basepoint_h + hoffset
                             if boxdir ~= pos_r then
                                 basepoint_v = basepoint_v - height
                             end
+                            usedorientation = orientation
+                        end
+                        if target then
+                            targetdata = anchors[target]
+                            if targetdata then
+                                anc_h =   basepoint_h
+                                anc_v = - basepoint_v
+                                goto posdone
+                            end
                         end
                         if pos_r == righttoleft_code then
                             pos_h = ref_h - (cur_h + basepoint_h)
@@ -922,14 +1022,88 @@ local hlist_out, vlist_out  do
                         end
                      -- pos_v = ref_v - (cur_v + basepoint_v)
                         pos_v = ref_v - basepoint_v
-                        -- synced
-                        pushorientation(orientation,pos_h,pos_v,pos_r)
-                        if id == vlist_code then
-                            vlist_out(current,list)
+                    elseif hasoffset then
+                        local orientation, xoffset, yoffset = getorientation(current)
+                        local basepoint_h = boxdir ~= pos_r and width or 0
+                        local basepoint_v = shift
+                        if target then
+                            targetdata = anchors[target]
+                            if targetdata then
+                                anc_h = xoffset + basepoint_h
+                                anc_v = yoffset - basepoint_v
+                                goto posdone
+                            end
+                        end
+                        if pos_r == righttoleft_code then
+                            pos_h = ref_h - (cur_h + basepoint_h + xoffset)
+                        else
+                            pos_h = ref_h + (cur_h + basepoint_h + xoffset)
+                        end
+                        pos_v = ref_v - (basepoint_v - yoffset)
+                    elseif hasanchor then
+                        local basepoint_h = boxdir ~= pos_r and width or 0
+                        local basepoint_v = shift
+                        if target then
+                            targetdata = anchors[target]
+                            if targetdata then
+                                anc_h =   basepoint_h
+                                anc_v = - basepoint_v
+                                goto posdone
+                            end
+                        end
+                        if pos_r == righttoleft_code then
+                            pos_h = ref_h - (cur_h + basepoint_h)
                         else
-                            hlist_out(current,list)
+                            pos_h = ref_h + (cur_h + basepoint_h)
                         end
-                        poporientation(orientation,pos_h,pos_v,pos_r)
+                        pos_v = ref_v - basepoint_v
+                    else
+                        local basepoint_h = boxdir ~= pos_r and width or 0
+                        local basepoint_v = shift
+                        if pos_r == righttoleft_code then
+                            pos_h = ref_h - (cur_h + basepoint_h)
+                        else
+                            pos_h = ref_h + (cur_h + basepoint_h)
+                        end
+                        pos_v = ref_v - basepoint_v
+                    end
+                    goto process
+                  ::posdone::
+                    if pos_r == righttoleft_code then
+                        pos_h = targetdata[1] - anc_h
+                    else
+                        pos_h = targetdata[1] + anc_h
+                    end
+                    pos_v = targetdata[2] + anc_v
+                    if anchor and anchor > 0 then
+                        pos_h, pos_v = applyanchor(anchor,true,pos_h,pos_v,targetdata[3],targetdata[4],targetdata[5])
+                        pos_h, pos_v = applyanchor(anchor,false,pos_h,pos_v,width,height,depth)
+                    end
+                  ::process::
+                    if source then
+                        local anchor_h = pos_h
+                        local anchor_v = pos_v
+                        if usedorientation then
+                            if usedorientation == 1 then
+                                anchor_v = anchor_v - (width - height)
+                            elseif usedorientation == 2 then
+                                anchor_v = anchor_v - (depth - height)
+                            elseif usedorientation == 3 then -- weird
+                                anchor_v = anchor_v + (height - width)
+                            end
+                        end
+                        anchors[source] = { anchor_h, anchor_v, width, height, depth }
+                    end
+                    if usedorientation then
+                        pushorientation(usedorientation,pos_h,pos_v,pos_r)
+                    end
+                    if id == vlist_code then
+                        vlist_out(current,list)
+                    else
+                        hlist_out(current,list)
+                    end
+                    if usedorientation then
+                        poporientation(usedorientation,pos_h,pos_v,pos_r)
                     end
                 end
                 cur_h = cur_h + width
@@ -1183,70 +1357,146 @@ local hlist_out, vlist_out  do
                 local list = getlist(current)
                 if list then
                     local boxdir = getdirection(current) or lefttoright_code
-                    local shift, orientation = getshift(current)
-                    if not orientation then
-                     -- local basepoint_h = shift
-                     -- local basepoint_v = height
-                        if boxdir ~= pos_r then
-                            shift = shift + width
+                    local shift = getshift(current)
+                    local geometry, hasoffset, hasorientation, hasanchor = getgeometry(current,true)
+                    local anchor, source, target, targetdata
+                    local usedorientation = false
+                    if hasanchor then
+                        anchor, source, target = getanchors(current)
+                    end
+                    if hasorientation then
+                        local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
+                        local orientation, basepoint_h, basepoint_v = applyorientation(orientation,shift,height,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
+                        if orientation == 1 then
+                            basepoint_h = basepoint_h + width - height -- hm
+                            basepoint_v = basepoint_v - height
+                            usedorientation = orientation
+                        elseif orientation == 2 then
+                            basepoint_h = basepoint_h + width
+                            basepoint_v = basepoint_v + depth - height
+                            usedorientation = orientation
+                        elseif orientation == 3 then -- weird
+                            basepoint_h = basepoint_h + height
+                            usedorientation = orientation
                         end
-                        if pos_r == righttoleft_code then
-                            pos_h = ref_h - shift
-                        else
-                            pos_h = ref_h + shift
+                        if target then
+                            targetdata = anchors[target]
+                            if targetdata then
+                                if pos_r == righttoleft_code then
+                                    pos_h = targetdata[1] - basepoint_h
+                                else
+                                    pos_h = targetdata[1] + basepoint_h
+                                end
+                                pos_v = targetdata[2] - basepoint_v
+                                goto posdone
+                            end
                         end
-                        pos_v = ref_v - (cur_v + height)
-                        -- synced
-                        if id == vlist_code then
-                            vlist_out(current,list)
+                        if pos_r == righttoleft_code then
+                            pos_h = ref_h - basepoint_h
                         else
-                            hlist_out(current,list)
+                            pos_h = ref_h + basepoint_h
                         end
-                    elseif orientation == 0x1000 then
+                        pos_v = ref_v - (cur_v + basepoint_v)
+                    elseif hasoffset then
                         local orientation, xoffset, yoffset = getorientation(current)
                      -- local basepoint_h = shift
                      -- local basepoint_v = height
                         if boxdir ~= pos_r then
                             shift = shift + width
                         end
+                        if target then
+                            targetdata = anchors[target]
+                            if targetdata then
+                                if pos_r == righttoleft_code then
+                                    pos_h = targetdata[1] - (shift + xoffset)
+                                else
+                                    pos_h = targetdata[1] + (shift + xoffset)
+                                end
+                                pos_v = targetdata[2] - (height - yoffset)
+                                goto posdone
+                            end
+                        end
                         if pos_r == righttoleft_code then
                             pos_h = ref_h - (shift + xoffset)
                         else
                             pos_h = ref_h + (shift + xoffset)
                         end
                         pos_v = ref_v - (cur_v + height - yoffset)
-                        -- synced
-                        if id == vlist_code then
-                            vlist_out(current,list)
+                    elseif hasanchor then
+                     -- local basepoint_h = shift
+                     -- local basepoint_v = height
+                        if boxdir ~= pos_r then
+                            shift = shift + width
+                        end
+                        if target then
+                            local a = anchors[target]
+                            if a then
+                                if pos_r == righttoleft_code then
+                                    pos_h = targetdata[1] - shift
+                                else
+                                    pos_h = targetdata[1] + shift
+                                end
+                                pos_v = targetdata[2] - height
+                                goto posdone
+                            end
+                        end
+                        if pos_r == righttoleft_code then
+                            pos_h = ref_h - shift
                         else
-                            hlist_out(current,list)
+                            pos_h = ref_h + shift
                         end
+                        pos_v = ref_v - (cur_v + height)
                     else
-                        local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
-                        local orientation, basepoint_h, basepoint_v = applyanchor(orientation,shift,height,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
-                        if orientation == 1 then
-                            basepoint_h = basepoint_h + width - height
-                            basepoint_v = basepoint_v - height
-                        elseif orientation == 2 then
-                            basepoint_h = basepoint_h + width
-                            basepoint_v = basepoint_v + depth - height
-                        elseif orientation == 3 then -- weird
-                            basepoint_h = basepoint_h + height
+                     -- local basepoint_h = shift
+                     -- local basepoint_v = height
+                        if boxdir ~= pos_r then
+                            shift = shift + width
                         end
                         if pos_r == righttoleft_code then
-                            pos_h = ref_h - basepoint_h
+                            pos_h = ref_h - shift
                         else
-                            pos_h = ref_h + basepoint_h
+                            pos_h = ref_h + shift
                         end
-                        pos_v = ref_v - (cur_v + basepoint_v)
-                        -- synced
-                        pushorientation(orientation,pos_h,pos_v,pos_r)
-                        if id == vlist_code then
-                            vlist_out(current,list)
-                        else
-                            hlist_out(current,list)
+                        pos_v = ref_v - (cur_v + height)
+                    end
+                    goto process
+                  ::posdone::
+                    if anchor and anchor > 0 then
+                        pos_h, pos_v = applyanchor(anchor,true,pos_h,pos_v,targetdata[3],targetdata[4],targetdata[5])
+                        pos_h, pos_v = applyanchor(anchor,false,pos_h,pos_v,width,height,depth)
+                    end
+                  ::process::
+                    if source then
+                        -- move this into apply_anchor
+                        local anchor_h = pos_h
+                        local anchor_v = pos_v
+                        if usedorientation then
+                            if usedorientation == 1 then
+                                anchor_v = anchor_v - (width - height)
+                            elseif usedorientation == 2 then
+                                anchor_v = anchor_v - (depth - height)
+                            elseif usedorientation == 3 then -- weird
+                                anchor_v = anchor_v + (height - width)
+                            end
                         end
-                        poporientation(orientation,pos_h,pos_v,pos_r)
+                        anchors[source] = { anchor_h, anchor_v, width, height, depth }
+                    end
+                    if usedorientation then
+                        pushorientation(usedorientation,pos_h,pos_v,pos_r)
+                    end
+                 -- if source then
+                 --     flushstored(current,source,true)
+                 -- end
+                    if id == vlist_code then
+                        vlist_out(current,list)
+                    else
+                        hlist_out(current,list)
+                    end
+                 -- if source then
+                 --     flushstored(current,source,false)
+                 -- end
+                    if usedorientation then
+                        poporientation(usedorientation,pos_h,pos_v,pos_r)
                     end
                 end
                 cur_v = cur_v + height + depth
@@ -1332,7 +1582,8 @@ function drivers.converters.lmtx(driver,box,smode,objnum,specification)
     flushliteral      = flushers.literal
     flushwhatsit      = flushers.whatsit
 
-    reset_dir_stack()
+    reset_directions()
+    reset_anchors()
     reset_state()
 
     shippingmode = smode
diff --git a/tex/context/base/mkxl/driv-usr.lmt b/tex/context/base/mkxl/driv-usr.lmt
index 2dc3cda73..5ff601f2a 100644
--- a/tex/context/base/mkxl/driv-usr.lmt
+++ b/tex/context/base/mkxl/driv-usr.lmt
@@ -14,6 +14,8 @@ local getdirection       = nuts.getdirection
 local getlist            = nuts.getlist
 local getoffsets         = nuts.getoffsets
 local getorientation     = nuts.getorientation
+local getanchors         = nuts.getanchors
+local getgeometry        = nuts.getgeometry
 local getwhd             = nuts.getwhd
 local getkern            = nuts.getkern
 local getwidth           = nuts.getwidth
@@ -67,6 +69,7 @@ local pos_h              = 0
 local pos_v              = 0
 local pos_r              = lefttoright_code
 
+local applyorientation   = drivers.applyorientation
 local applyanchor        = drivers.applyanchor
 
 local initialize
@@ -119,42 +122,88 @@ hlist_out = function(this_box,current)
             local list = getlist(current)
             if list then
                 local boxdir = getdirection(current) or lefttoright_code
-                local shift, orientation = getshift(current)
-                if not orientation then
-                    local basepoint_h = boxdir ~= pos_r and width or 0
-                    if pos_r == righttoleft_code then
-                        pos_h = ref_h - (cur_h + basepoint_h)
-                    else
-                        pos_h = ref_h + (cur_h + basepoint_h)
-                    end
-                    pos_v = ref_v - shift
-                elseif orientation == 0x1000 then
-                    local orientation, xoffset, yoffset = getorientation(current)
-                    local basepoint_h = boxdir ~= pos_r and width or 0
-                    if pos_r == righttoleft_code then
-                        pos_h = ref_h - (cur_h + basepoint_h + xoffset)
-                    else
-                        pos_h = ref_h + (cur_h + basepoint_h + xoffset)
-                    end
-                    pos_v = ref_v - (shift - yoffset)
-                else
+                local shift  = getshift(current)
+                local geometry, hasoffset, hasorientation, hasanchor = getgeometry(current,true)
+                local anchor, source, target, targetdata
+                local anc_h, anc_v
+                local usedorientation = false
+                if hasanchor then
+                    anchor, source, target = getanchors(current)
+                end
+                if hasorientation then
                     local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
-                    local orientation, basepoint_h, basepoint_v = applyanchor(orientation,0,shift,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
+                    local orientation, basepoint_h, basepoint_v = applyorientation(orientation,0,shift,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
                     if orientation == 1 then
                         basepoint_h = basepoint_h + doffset
                         if boxdir == pos_r then
                             basepoint_v = basepoint_v - height
                         end
+                        usedorientation = orientation
                     elseif orientation == 2 then
                         if boxdir == pos_r then
                             basepoint_h = basepoint_h + width
                         end
+                        usedorientation = orientation
                     elseif orientation == 3 then
                         basepoint_h = basepoint_h + hoffset
                         if boxdir ~= pos_r then
                             basepoint_v = basepoint_v - height
                         end
+                        usedorientation = orientation
+                    end
+                    if target then
+                        targetdata = anchors[target]
+                        if targetdata then
+                            anc_h =   basepoint_h
+                            anc_v = - basepoint_v
+                            goto posdone
+                        end
+                    end
+                    if pos_r == righttoleft_code then
+                        pos_h = ref_h - (cur_h + basepoint_h)
+                    else
+                        pos_h = ref_h + (cur_h + basepoint_h)
+                    end
+                 -- pos_v = ref_v - (cur_v + basepoint_v)
+                    pos_v = ref_v - basepoint_v
+                elseif hasoffset then
+                    local orientation, xoffset, yoffset = getorientation(current)
+                    local basepoint_h = boxdir ~= pos_r and width or 0
+                    local basepoint_v = shift
+                    if target then
+                        targetdata = anchors[target]
+                        if targetdata then
+                            anc_h = xoffset + basepoint_h
+                            anc_v = yoffset - basepoint_v
+                            goto posdone
+                        end
+                    end
+                    if pos_r == righttoleft_code then
+                        pos_h = ref_h - (cur_h + basepoint_h + xoffset)
+                    else
+                        pos_h = ref_h + (cur_h + basepoint_h + xoffset)
+                    end
+                    pos_v = ref_v - (basepoint_v - yoffset)
+                elseif hasanchor then
+                    local basepoint_h = boxdir ~= pos_r and width or 0
+                    local basepoint_v = shift
+                    if target then
+                        targetdata = anchors[target]
+                        if targetdata then
+                            anc_h =   basepoint_h
+                            anc_v = - basepoint_v
+                            goto posdone
+                        end
+                    end
+                    if pos_r == righttoleft_code then
+                        pos_h = ref_h - (cur_h + basepoint_h)
+                    else
+                        pos_h = ref_h + (cur_h + basepoint_h)
                     end
+                    pos_v = ref_v - basepoint_v
+                else
+                    local basepoint_h = boxdir ~= pos_r and width or 0
+                    local basepoint_v = shift
                     if pos_r == righttoleft_code then
                         pos_h = ref_h - (cur_h + basepoint_h)
                     else
@@ -162,13 +211,47 @@ hlist_out = function(this_box,current)
                     end
                     pos_v = ref_v - basepoint_v
                 end
+                goto process
+              ::posdone::
+                if pos_r == righttoleft_code then
+                    pos_h = targetdata[1] - anc_h
+                else
+                    pos_h = targetdata[1] + anc_h
+                end
+                pos_v = targetdata[2] + anc_v
+                if anchor and anchor > 0 then
+                    pos_h, pos_v = applyanchor(anchor,true,pos_h,pos_v,targetdata[3],targetdata[4],targetdata[5])
+                    pos_h, pos_v = applyanchor(anchor,false,pos_h,pos_v,width,height,depth)
+                end
+              ::process::
+                if source then
+                    local anchor_h = pos_h
+                    local anchor_v = pos_v
+                    if usedorientation then
+                        if usedorientation == 1 then
+                            anchor_v = anchor_v - (width - height)
+                        elseif usedorientation == 2 then
+                            anchor_v = anchor_v - (depth - height)
+                        elseif usedorientation == 3 then -- weird
+                            anchor_v = anchor_v + (height - width)
+                        end
+                    end
+                    anchors[source] = { anchor_h, anchor_v, width, height, depth }
+                end
+             -- if usedorientation then
+             --     pushorientation(usedorientation,pos_h,pos_v,pos_r)
+             -- end
                 if id == vlist_code then
                     vlist_out(current,list)
                 else
                     hlist_out(current,list)
                 end
+             -- if usedorientation then
+             --     poporientation(usedorientation,pos_h,pos_v,pos_r)
+             -- end
             end
             cur_h = cur_h + width
+
         elseif id == kern_code then
             local kern, factor = getkern(current,true)
             if kern ~= 0 then
@@ -271,54 +354,150 @@ vlist_out = function(this_box,current)
             local list = getlist(current)
             if list then
                 local boxdir = getdirection(current) or lefttoright_code
-                local shift, orientation = getshift(current)
-                if not orientation then
-                    if boxdir ~= pos_r then
-                        shift = shift + width
+                local shift = getshift(current)
+                local geometry, hasoffset, hasorientation, hasanchor = getgeometry(current,true)
+                local anchor, source, target, targetdata
+                local usedorientation = false
+                if hasanchor then
+                    anchor, source, target = getanchors(current)
+                end
+                if hasorientation then
+                    local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
+                    local orientation, basepoint_h, basepoint_v = applyorientation(orientation,shift,height,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
+                    if orientation == 1 then
+                        basepoint_h = basepoint_h + width - height -- hm
+                        basepoint_v = basepoint_v - height
+                        usedorientation = orientation
+                    elseif orientation == 2 then
+                        basepoint_h = basepoint_h + width
+                        basepoint_v = basepoint_v + depth - height
+                        usedorientation = orientation
+                    elseif orientation == 3 then -- weird
+                        basepoint_h = basepoint_h + height
+                        usedorientation = orientation
+                    end
+                    if target then
+                        targetdata = anchors[target]
+                        if targetdata then
+                            if pos_r == righttoleft_code then
+                                pos_h = targetdata[1] - basepoint_h
+                            else
+                                pos_h = targetdata[1] + basepoint_h
+                            end
+                            pos_v = targetdata[2] - basepoint_v
+                            goto posdone
+                        end
                     end
                     if pos_r == righttoleft_code then
-                        pos_h = ref_h - shift
+                        pos_h = ref_h - basepoint_h
                     else
-                        pos_h = ref_h + shift
+                        pos_h = ref_h + basepoint_h
                     end
-                    pos_v = ref_v - (cur_v + height)
-                elseif orientation == 0x1000 then
+                    pos_v = ref_v - (cur_v + basepoint_v)
+                elseif hasoffset then
                     local orientation, xoffset, yoffset = getorientation(current)
+                 -- local basepoint_h = shift
+                 -- local basepoint_v = height
                     if boxdir ~= pos_r then
                         shift = shift + width
                     end
+                    if target then
+                        targetdata = anchors[target]
+                        if targetdata then
+                            if pos_r == righttoleft_code then
+                                pos_h = targetdata[1] - (shift + xoffset)
+                            else
+                                pos_h = targetdata[1] + (shift + xoffset)
+                            end
+                            pos_v = targetdata[2] - (height - yoffset)
+                            goto posdone
+                        end
+                    end
                     if pos_r == righttoleft_code then
                         pos_h = ref_h - (shift + xoffset)
                     else
                         pos_h = ref_h + (shift + xoffset)
                     end
                     pos_v = ref_v - (cur_v + height - yoffset)
+                elseif hasanchor then
+                 -- local basepoint_h = shift
+                 -- local basepoint_v = height
+                    if boxdir ~= pos_r then
+                        shift = shift + width
+                    end
+                    if target then
+                        local a = anchors[target]
+                        if a then
+                            if pos_r == righttoleft_code then
+                                pos_h = targetdata[1] - shift
+                            else
+                                pos_h = targetdata[1] + shift
+                            end
+                            pos_v = targetdata[2] - height
+                            goto posdone
+                        end
+                    end
+                    if pos_r == righttoleft_code then
+                        pos_h = ref_h - shift
+                    else
+                        pos_h = ref_h + shift
+                    end
+                    pos_v = ref_v - (cur_v + height)
                 else
-                    local orientation, xoffset, yoffset, woffset, hoffset, doffset = getorientation(current)
-                    local orientation, basepoint_h, basepoint_v = applyanchor(orientation,shift,height,width,height,depth,woffset,hoffset,doffset,xoffset,yoffset)
-                    if orientation == 1 then
-                        basepoint_h = basepoint_h + width - height
-                        basepoint_v = basepoint_v - height
-                    elseif orientation == 2 then
-                        basepoint_h = basepoint_h + width
-                        basepoint_v = basepoint_v + depth - height
-                    elseif orientation == 3 then -- weird
-                        basepoint_h = basepoint_h + height
+                 -- local basepoint_h = shift
+                 -- local basepoint_v = height
+                    if boxdir ~= pos_r then
+                        shift = shift + width
                     end
                     if pos_r == righttoleft_code then
-                        pos_h = ref_h - basepoint_h
+                        pos_h = ref_h - shift
                     else
-                        pos_h = ref_h + basepoint_h
+                        pos_h = ref_h + shift
                     end
-                    pos_v = ref_v - (cur_v + basepoint_v)
+                    pos_v = ref_v - (cur_v + height)
+                end
+                goto process
+              ::posdone::
+                if anchor and anchor > 0 then
+                    pos_h, pos_v = applyanchor(anchor,true,pos_h,pos_v,targetdata[3],targetdata[4],targetdata[5])
+                    pos_h, pos_v = applyanchor(anchor,false,pos_h,pos_v,width,height,depth)
+                end
+              ::process::
+                if source then
+                    -- move this into apply_anchor
+                    local anchor_h = pos_h
+                    local anchor_v = pos_v
+                    if usedorientation then
+                        if usedorientation == 1 then
+                            anchor_v = anchor_v - (width - height)
+                        elseif usedorientation == 2 then
+                            anchor_v = anchor_v - (depth - height)
+                        elseif usedorientation == 3 then -- weird
+                            anchor_v = anchor_v + (height - width)
+                        end
+                    end
+                    anchors[source] = { anchor_h, anchor_v, width, height, depth }
                 end
+             -- if usedorientation then
+             --     pushorientation(usedorientation,pos_h,pos_v,pos_r)
+             -- end
+             -- if source then
+             --     flushstored(current,source,true)
+             -- end
                 if id == vlist_code then
                     vlist_out(current,list)
                 else
                     hlist_out(current,list)
                 end
+             -- if source then
+             --     flushstored(current,source,false)
+             -- end
+             -- if usedorientation then
+             --     poporientation(usedorientation,pos_h,pos_v,pos_r)
+             -- end
             end
             cur_v = cur_v + height + depth
+
         elseif id == kern_code then
             cur_v = cur_v + getkern(current)
         elseif id == rule_code then
diff --git a/tex/context/base/mkxl/grph-rul.lmt b/tex/context/base/mkxl/grph-rul.lmt
index 50a40155e..b1de3a6a6 100644
--- a/tex/context/base/mkxl/grph-rul.lmt
+++ b/tex/context/base/mkxl/grph-rul.lmt
@@ -22,6 +22,8 @@ local tonode           = nuts.tonode
 
 local getattribute     = tex.getattribute
 
+local direct_value     = tokens.values.direct
+
 local a_color          = attributes.private('color')
 local a_transparency   = attributes.private('transparency')
 local a_colormodel     = attributes.private('colormodel')
@@ -40,6 +42,8 @@ end)
 
 interfaces.implement {
     name      = "frule",
+    public    = true,
+    protected = true,
     arguments = { {
         { "width",  "dimension" },
         { "height", "dimension" },
@@ -52,7 +56,7 @@ interfaces.implement {
         { "radius", "dimension" },
         { "corner", "string" },
     } } ,
-    actions = function(t)
+    actions = function(t,...)
         local rule = userrule(t)
         if t.type == "mp" then
             t.ma = getattribute(a_colormodel) or 1
@@ -61,7 +65,7 @@ interfaces.implement {
         else
             setattrlist(rule,true)
         end
-        context(tonode(rule)) -- will become context.nodes.flush
+        context(nuts.tonode(rule))
     end
 }
 
@@ -78,17 +82,19 @@ interfaces.implement {
     actions = function(t)
         local rule = outlinerule(t.width,t.height,t.depth,t.line)
         setattrlist(rule,true)
-        context(tonode(rule)) -- will become context.nodes.flush
+        context(tonode(rule))
     end
 }
 
 interfaces.implement {
     name      = "framedoutline",
+ -- public    = true,
+ -- protected = true,
     arguments = { "dimension", "dimension", "dimension", "dimension" },
     actions   = function(w,h,d,l)
         local rule = outlinerule(w,h,d,l)
         setattrlist(rule,true)
-        context(tonode(rule)) -- will become context.nodes.flush
+        context(tonode(rule))
     end
 }
 
diff --git a/tex/context/base/mkxl/grph-rul.mkxl b/tex/context/base/mkxl/grph-rul.mkxl
index 034e91734..5c192e345 100644
--- a/tex/context/base/mkxl/grph-rul.mkxl
+++ b/tex/context/base/mkxl/grph-rul.mkxl
@@ -17,7 +17,7 @@
 
 \unprotect
 
-\permanent\protected\def\frule{\relax\clf_frule} % will become a public implementer
+% \permanent\protected\def\frule{\relax\clf_frule} % will become a public implementer
 
 % just for fun:
 
diff --git a/tex/context/base/mkxl/lang-ini.lmt b/tex/context/base/mkxl/lang-ini.lmt
index 2030fb697..7919df530 100644
--- a/tex/context/base/mkxl/lang-ini.lmt
+++ b/tex/context/base/mkxl/lang-ini.lmt
@@ -607,25 +607,25 @@ end
 
 do
 
-    local nuts                  = nodes.nuts
-    local nextglyph             = nuts.traversers.glyph
-    local setoptions            = nuts.setoptions
-
-    local getnext        = nuts.getnext
-    local getprev        = nuts.getprev
-    local setchar        = nuts.setchar
-    local setnext        = nuts.setnext
-    local setlink        = nuts.setlink
-    local setfield       = nuts.setfield
-    local setdisc        = nuts.setdisc
-    local getprop        = nuts.getprop
-    local setprop        = nuts.setprop
-    local setattrlist    = nuts.setattrlist
-
-    local new_disc       = nuts.pool.disc
-    local new_glyph      = nuts.pool.glyph
-    local copy_node      = nuts.copy
-    local flushlist      = nuts.flushlist
+    local nuts        = nodes.nuts
+    local nextglyph   = nuts.traversers.glyph
+    local setoptions  = nuts.setoptions
+
+    local getnext     = nuts.getnext
+    local getprev     = nuts.getprev
+    local setchar     = nuts.setchar
+    local setnext     = nuts.setnext
+    local setlink     = nuts.setlink
+    local setfield    = nuts.setfield
+    local setdisc     = nuts.setdisc
+    local getprop     = nuts.getprop
+    local setprop     = nuts.setprop
+    local setattrlist = nuts.setattrlist
+
+    local new_disc    = nuts.pool.disc
+    local new_glyph   = nuts.pool.glyph
+    local copy_node   = nuts.copy
+    local flushlist   = nuts.flushlist
 
     local glyphoptioncodes      = tex.glyphoptioncodes
 
@@ -794,6 +794,7 @@ do
     local sequencers    = utilities.sequencers
     local newsequencer  = sequencers.new
     local appendgroup   = sequencers.appendgroup
+    local prependaction = sequencers.prependaction
     local appendaction  = sequencers.appendaction
     local enableaction  = sequencers.enableaction
     local disableaction = sequencers.disableaction
diff --git a/tex/context/base/mkxl/lpdf-lmt.lmt b/tex/context/base/mkxl/lpdf-lmt.lmt
index 321dea935..0861e0916 100644
--- a/tex/context/base/mkxl/lpdf-lmt.lmt
+++ b/tex/context/base/mkxl/lpdf-lmt.lmt
@@ -1429,15 +1429,13 @@ local flushimage  do
     -- small sizes which is needed for inaccurate viewers.
 
     flushers.rule = function(current,pos_h,pos_v,pos_r,size_h,size_v,subtype)
-
         if subtype == emptyrule_code then
             return
         elseif subtype == boxrule_code then
             return flushpdfxform(current,pos_h,pos_v,pos_r,size_h,size_v)
         elseif subtype == imagerule_code then
             return flushpdfximage(current,pos_h,pos_v,pos_r,size_h,size_v)
-        end
-        if subtype == userrule_code or subtype >= overrule_code and subtype <= radicalrule_code then
+        elseif subtype == userrule_code or (subtype >= overrule_code and subtype <= radicalrule_code) then
             pdf_goto_pagemode()
             b = b + 1 ; buffer[b] = s_b
             pdf_set_pos_temp(pos_h,pos_v)
diff --git a/tex/context/base/mkxl/lpdf-rul.lmt b/tex/context/base/mkxl/lpdf-rul.lmt
index 4c7bcf633..96b4597bb 100644
--- a/tex/context/base/mkxl/lpdf-rul.lmt
+++ b/tex/context/base/mkxl/lpdf-rul.lmt
@@ -101,12 +101,18 @@ def RuleColor = %color% enddef ;
     local initialized = false ;
 
     local function rule_mp(p,h,v,i,n)
-        local name = p.name or "fake:rest"
-        local code = (predefined[name] or predefined["fake:rest"]) {
+        local name  = p.name or "fake:rest"
+        local ht    = p.height or 0
+        local dp    = p.depth  or 0
+        local total = ht + dp
+        local code  = (predefined[name] or predefined["fake:rest"]) {
             data      = p.data or "",
-            width     = p.width * bpfactor,
-            height    = p.height * bpfactor,
-            depth     = p.depth * bpfactor,
+         -- width     = p.width * bpfactor,
+         -- height    = p.height * bpfactor,
+         -- depth     = p.depth * bpfactor,
+            width     = h * bpfactor,
+            height    = v * bpfactor * ht / total,
+            depth     = v * bpfactor * dp / total,
             factor    = (p.factor or 0) * bpfactor, -- needs checking
             offset    = p.offset or 0,
             line      = (p.line or 65536) * bpfactor,
diff --git a/tex/context/base/mkxl/luat-log.lmt b/tex/context/base/mkxl/luat-log.lmt
index 2b5b60dd9..dd6c1b990 100644
--- a/tex/context/base/mkxl/luat-log.lmt
+++ b/tex/context/base/mkxl/luat-log.lmt
@@ -626,6 +626,11 @@ if package.helpers.report then
     package.helpers.report = logs.reporter("package loader") -- when used outside mtxrun
 end
 
+-- logs.errors=missing references,missing characters
+-- logs.errors=characters
+-- logs.errors=missing
+-- logs.errors=*
+
 do
 
     local finalactions  = { }
@@ -641,6 +646,9 @@ do
         loggingerrors = v
         if type(v) == "string" then
             fatalerrors = settings_to_hash(v)
+            for k, v in next, fatalerrors do
+                fatalerrors[k] = string.topattern(k)
+            end
         else
             fatalerrors = { }
         end
@@ -704,6 +712,13 @@ do
         end
         if fatalerrors[w] then
             possiblefatal[w] = true
+        else
+            for k, v in next, fatalerrors do
+                if find(w,v) then
+                    possiblefatal[w] = true
+                    break
+                end
+            end
         end
         return startlogging("terminal",r,w,...)
     end
diff --git a/tex/context/base/mkxl/mult-sys.mkxl b/tex/context/base/mkxl/mult-sys.mkxl
index 500d929c6..48a35e0b2 100644
--- a/tex/context/base/mkxl/mult-sys.mkxl
+++ b/tex/context/base/mkxl/mult-sys.mkxl
@@ -106,6 +106,7 @@
 \definesystemconstant {action}
 \definesystemconstant {all}
 \definesystemconstant {ampersand}
+\definesystemconstant {anchor}
 \definesystemconstant {ascii}
 \definesystemconstant {attribute}
 \definesystemconstant {attr}
@@ -357,6 +358,7 @@
 \definesystemconstant {smallcaps}
 \definesystemconstant {small}
 \definesystemconstant {somewhere}
+\definesystemconstant {source}
 \definesystemconstant {special}
 \definesystemconstant {spec}
 \definesystemconstant {spot}
@@ -375,6 +377,7 @@
 \definesystemconstant {text}
 \definesystemconstant {tex}
 \definesystemconstant {tf}
+\definesystemconstant {target}
 \definesystemconstant {third}
 \definesystemconstant {topfloat}
 \definesystemconstant {top}
diff --git a/tex/context/base/mkxl/node-bck.lmt b/tex/context/base/mkxl/node-bck.lmt
index ff48ff8b5..ad8f8d59e 100644
--- a/tex/context/base/mkxl/node-bck.lmt
+++ b/tex/context/base/mkxl/node-bck.lmt
@@ -65,7 +65,7 @@ local linefillers        = nodes.linefillers
 local a_background       = privateattributes("background")
 local a_alignbackground  = privateattributes("alignbackground")
 local a_linefiller       = privateattributes("linefiller")
-local a_ruled            = privateattributes("ruled")
+----- a_ruled            = privateattributes("ruled")
 
 local trace_alignment    = false
 local report_alignment   = logs.reporter("backgrounds","alignment")
@@ -146,7 +146,7 @@ local function add_alignbackgrounds(head,list,data)
             for template in nexthlist, list do
                 local background = getattr(template,a_alignbackground)
                 if background then
-                    local list = colored_a(current,list,template,data)
+                    local list = colored_a(current,list,template,id,data)
                     if list then
                         setlist(current,list)
                     end
@@ -169,7 +169,7 @@ local function add_backgrounds(head,id,list,data)
     if list then
         for current, id, subtype, list in nextlist, list do
             if list then
-                if alignments and subtype == alignmentlist_code then
+                if data and alignments and subtype == alignmentlist_code then
                     local l = add_alignbackgrounds(current,list,data)
                     if l then
                         list = l
@@ -197,9 +197,9 @@ end
 
 function nodes.handlers.backgrounds(head)
     local data = attributes.values[a_linefiller]
-    if data then
+--     if data then
         add_backgrounds(head,getid(head),getlist(head),data)
-    end
+--     end
     return head
 end
 
diff --git a/tex/context/base/mkxl/node-fin.lmt b/tex/context/base/mkxl/node-fin.lmt
index 4bf8663be..7093638de 100644
--- a/tex/context/base/mkxl/node-fin.lmt
+++ b/tex/context/base/mkxl/node-fin.lmt
@@ -23,7 +23,7 @@ local getattr          = nuts.getattr
 local getattrs         = nuts.getattrs
 local getwidth         = nuts.getwidth
 local getwhd           = nuts.getwhd
-local getorientation   = nuts.getorientation
+local hasgeometry      = nuts.hasgeometry
 local hasdimensions    = nuts.hasdimensions
 local getbox           = nuts.getbox
 
@@ -184,7 +184,7 @@ local function process(attribute,head,inheritance,default) -- one attribute
         elseif id == hlist_code or id == vlist_code then
             -- tricky checking
             local outer
-            if subtype == container_code or getorientation(stack) then
+            if subtype == container_code or hasgeometry(stack) then
                 outer = getattr(stack,attribute)
                 if outer then
                     if default and outer == inheritance then
@@ -271,7 +271,7 @@ local function simple(attribute,head)
             check  = true
             leader = content
         elseif id == hlist_code or id == vlist_code then
-            if subtype == container_code or getorientation(stack) then
+            if subtype == container_code or hasgeometry(stack) then
                 local outer = getattr(stack,attribute)
                 if outer then
                     if current ~= outer then
@@ -349,7 +349,7 @@ local function selective(attribute,head,inheritance,default) -- two attributes
             leader = content
         elseif id == hlist_code or id == vlist_code then
             local outer, s
-            if subtype == container_code or getorientation(stack) then
+            if subtype == container_code or hasgeometry(stack) then
                 outer, s = getattrs(stack,attribute,nsselector)
                 if outer then
                     if default and outer == inheritance then
diff --git a/tex/context/base/mkxl/node-nut.lmt b/tex/context/base/mkxl/node-nut.lmt
index dfa89e4ab..fa98d26fe 100644
--- a/tex/context/base/mkxl/node-nut.lmt
+++ b/tex/context/base/mkxl/node-nut.lmt
@@ -112,6 +112,8 @@ local nuts = {
     getnucleus              = direct.getnucleus,
     getoffsets              = direct.getoffsets,
     getoptions              = direct.getoptions,
+    getanchors              = direct.getanchors,
+    getgeometry             = direct.getgeometry,
     getorientation          = direct.getorientation,
     getpenalty              = direct.getpenalty,
     getpost                 = direct.getpost,
@@ -141,6 +143,7 @@ local nuts = {
     hasattribute            = direct.hasattribute,
     hasdimensions           = direct.hasdimensions,
     hasfield                = direct.hasfield,
+    hasgeometry             = direct.hasgeometry,
     hasglyph                = direct.hasglyph,
     hasglyphoption          = direct.hasglyphoption,
     hpack                   = direct.hpack,
@@ -215,6 +218,8 @@ local nuts = {
     setnucleus              = direct.setnucleus,
     setoffsets              = direct.setoffsets,
     setoptions              = direct.setoptions,
+    setanchors              = direct.setanchors,
+    setgeometry             = direct.setgeometry,
     setorientation          = direct.setorientation,
     setpenalty              = direct.setpenalty,
     setpost                 = direct.setpost,
diff --git a/tex/context/base/mkxl/node-shp.lmt b/tex/context/base/mkxl/node-shp.lmt
index 6cae39517..7848c623e 100644
--- a/tex/context/base/mkxl/node-shp.lmt
+++ b/tex/context/base/mkxl/node-shp.lmt
@@ -38,6 +38,10 @@ function handlers.finalizebox(box)
     actions(getbox(box)) -- nut
 end
 
+function handlers.finalizelist(list)
+    actions(list) -- nut
+end
+
 do
 
     local flattendiscretionaries = nuts.flattendiscretionaries
diff --git a/tex/context/base/mkxl/pack-box.mkxl b/tex/context/base/mkxl/pack-box.mkxl
index 43934f7f7..9ed90a885 100644
--- a/tex/context/base/mkxl/pack-box.mkxl
+++ b/tex/context/base/mkxl/pack-box.mkxl
@@ -1118,4 +1118,130 @@
      [\c!width=\overlaywidth,\c!height=\overlayheight]
      {\overlayimage{#1}}}
 
+%D Here is an end December 2021 experimental feature: anchored boxes. This will move to
+%D pack-box.mkxl
+
+\installcorenamespace{boxanchor}
+\installcorenamespace{boxanchorid}
+\installcorenamespace{boxanchorbox}
+\installcorenamespace{boxpreset}
+
+\installparameterhandler \??boxanchor {boxanchor}
+\installsetuphandler     \??boxanchor {boxanchor}
+
+\setupboxanchor
+  [\c!xoffset=\zeropoint,
+   \c!yoffset=\zeropoint]
+
+\newcount\c_boxes_n_of_anchors
+
+\permanent\protected\def\defineanchorbox[#1]%
+  {\ifcsname\??boxanchorid#1\endcsname
+     \box\lastnamedcs\emptybox
+   \else
+     \global\advance\c_boxes_n_of_anchors\plusone
+     \expandafter\integerdef\csname\??boxanchorid #1\endcsname\c_boxes_n_of_anchors
+     \expandafter\newbox    \csname\??boxanchorbox#1\endcsname
+   \fi}
+
+\permanent\protected\def\defineanchorboxoverlay[#1]%
+  {\defineanchorbox[#1:\v!background]%
+   \defineanchorbox[#1:\v!foreground]%
+   \defineoverlay[#1:\v!background][\overlayanchorbox{#1:\v!background}]%
+   \defineoverlay[#1:\v!foreground][\overlayanchorbox{#1:\v!foreground}]}
+
+\permanent\def\namedboxanchor#1%
+  {\csname\??boxanchorid#1\endcsname} % no checking
+
+% \permanent\protected\def\overlayanchorbox#1%
+%   {\begingroup
+%    \scratchcounter\csname\??boxanchorbox#1\endcsname
+%    \ifvoid\scratchcounter\else
+%      \setbox\scratchbox\hpack \s!source \namedboxanchor{#1}\bgroup
+%    % \setbox\scratchbox\hpack\bgroup
+%        \box\scratchcounter
+%      \egroup
+%    % \boxsource\scratchbox\namedboxanchor{#1}%
+%      \wd\scratchbox\overlaywidth
+%      \ht\scratchbox\overlayheight
+%      \dp\scratchbox\overlaydepth
+%      \box\scratchbox
+%    \fi
+%    \endgroup}
+
+\permanent\protected\def\overlayanchorbox#1%
+  {\begingroup
+   \scratchcounter\csname\??boxanchorbox#1\endcsname
+   \ifvoid\scratchcounter\else
+     \boxsource\scratchcounter\namedboxanchor{#1}%
+     \wd\scratchcounter\d_overlay_width
+     \ht\scratchcounter\d_overlay_height
+     \dp\scratchcounter\d_overlay_depth
+     \box\scratchcounter
+   \fi
+   \endgroup}
+
+\permanent\tolerant\protected\def\setanchorbox[#1]#*[#2]%
+  {\begingroup
+   \dowithnextbox
+     {\def\currentanchorbox{#1}%
+      \setupboxanchor[#2]%
+      \scratchcounterone\csname\??boxanchorbox#1\endcsname\relax
+      \scratchxoffset\boxanchorparameter\c!xoffset\relax
+      \scratchyoffset\boxanchorparameter\c!yoffset\relax
+      \boxtarget\nextbox \namedboxanchor {#1}\relax
+      \boxanchors\nextbox
+        % target
+        \ifcsname\??boxpreset\boxanchorparameter\c!target\endcsname
+          \lastnamedcs
+        \else
+          \halfwaytotallistanchorcode
+        \fi
+        % source
+        \ifcsname\??boxpreset\boxanchorparameter\c!source\endcsname
+          \lastnamedcs
+        \else
+          \halfwaytotallistanchorcode
+        \fi
+      \ifdim\scratchxoffset=\zeropoint\else
+         \boxxoffset\nextbox\scratchxoffset
+      \fi
+      \ifdim\scratchyoffset=\zeropoint\else
+         \boxyoffset\nextbox\scratchyoffset
+      \fi
+      \global\setbox\scratchcounterone\hpack\bgroup
+        \unhbox\scratchcounterone
+        \hskip-\wd\nextbox
+        \box\nextbox
+      \egroup
+      \endgroup}}
+
+\expandafter\integerdef\csname\??boxpreset\v!left            \endcsname\leftoriginlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!left,\v!height  \endcsname\leftheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!left,\v!top     \endcsname\leftheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!left,\v!depth   \endcsname\leftdepthlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!left,\v!bottom  \endcsname\leftdepthlistanchorcode
+%
+\expandafter\integerdef\csname\??boxpreset\v!right           \endcsname\rightoriginlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!right,\v!height \endcsname\rightheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!right,\v!top    \endcsname\rightheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!right,\v!depth  \endcsname\rightdepthlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!right,\v!bottom \endcsname\rightdepthlistanchorcode
+
+%                                                                      \centeroriginlistanchorcode
+%                                                                      \centerheightlistanchorcode
+%                                                                      \centerdepthlistanchorcode
+
+\expandafter\integerdef\csname\??boxpreset\v!middle          \endcsname\halfwaytotallistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!height\endcsname\halfwayheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!top   \endcsname\halfwayheightlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!depth \endcsname\halfwaydepthlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!bottom\endcsname\halfwaydepthlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!left  \endcsname\halfwayleftlistanchorcode
+\expandafter\integerdef\csname\??boxpreset\v!middle,\v!right \endcsname\halfwayrightlistanchorcode
+
+% \negatexlistsigncode
+% \negateylistsigncode
+% \negatelistsigncode
+
 \protect \endinput
diff --git a/tex/context/base/mkxl/page-sid.mkxl b/tex/context/base/mkxl/page-sid.mkxl
index fb1022c2a..1ff587120 100644
--- a/tex/context/base/mkxl/page-sid.mkxl
+++ b/tex/context/base/mkxl/page-sid.mkxl
@@ -46,6 +46,7 @@
 \newdimen       \d_page_sides_rightoffset
 
 %newbox         \b_page_sides_bottom
+\newbox         \b_page_sides_spill_over
 
 \newcount       \c_page_sides_lines_done
 \newcount       \c_page_sides_checks_done
@@ -57,6 +58,7 @@
 \newconditional \c_page_sides_short
 \newconditional \c_page_sides_flag
 \newconditional \c_page_sides_shape_down
+\newconditional \c_page_sides_keep_together
 
 \newdimen       \d_page_sides_shift
 \newdimen       \d_page_sides_extrashift
@@ -294,7 +296,7 @@
          \box\floatbox
          % somehow we need this \scratchbox magic, but at least it's the same as the
          % tracer now
-         \setbox\scratchbox\emptybox
+         \setbox\scratchbox\emptyhbox
          \wd\scratchbox\hsize
          \ht\scratchbox\d_page_sides_bottomtotal
          \box\scratchbox
@@ -387,7 +389,6 @@
    \fi
    \global\d_page_sides_downshift\zeropoint}
 
-
 %D We have a few virtual dimensions. I'm not sure what to do with \type
 %D {\pagedepth} and \type {\pageshrink} in the next two. If we ever need
 %D that it will become options.
@@ -448,7 +449,10 @@
      \penalty\zerocount % works too
    \else
     %\tracingpages\plusone \tracingonline\plustwo
+     \begingroup
+     \pageboundarypenalty\plustenthousand
      \pageboundary % becomes a penalty (after triggering the callback) (experimental!)
+     \endgroup
     %\tracingpages\zerocount
    \fi
    \page_otr_command_set_vsize} % new, no longer really needed
@@ -895,6 +899,40 @@
    \prevdepth\strutdp}
   %\ignoreparskip}
 
+% \def\page_sides_handle_float#1%
+%   {\page_sides_initialize_checker
+%    \page_sides_check_horizontal_skips
+%    \page_sides_check_vertical_skips
+%    \page_sides_apply_horizontal_shift
+%    \page_sides_check_previous_float
+%    \page_sides_inject_before
+%    \page_sides_inject_dummy_lines
+%    \page_sides_relocate_float{#1}%
+%    \page_sides_apply_vertical_shift
+%    \page_sides_analyse_space
+%    \ifconditional\c_page_floats_room
+%      \global\setfalse\c_page_sides_delayed
+%      % we're ok
+%    \else
+%      \global\settrue\c_page_sides_delayed
+%      \global\c_page_sides_m_of_lines\c_page_sides_n_of_lines
+%      \ifcase\c_page_sides_page_method
+%        \page_otr_fill_and_eject_page
+%      \or
+%        \page_otr_force_new_page_one
+%      \else
+%        \page_otr_fill_and_eject_page
+%      \fi
+%      \global\c_page_sides_n_of_lines\c_page_sides_m_of_lines
+%      \page_sides_analyse_space
+%     %\page_sides_inject_before
+%      \page_sides_inject_dummy_lines
+%    \fi
+%    \page_sides_place_float
+%    \global\setfalse\c_page_sides_delayed
+%    \page_sides_check_floats_reset
+%    \page_sides_wrapup}
+
 \def\page_sides_handle_float#1%
   {\page_sides_initialize_checker
    \page_sides_check_horizontal_skips
@@ -910,16 +948,21 @@
      \global\setfalse\c_page_sides_delayed
      % we're ok
    \else
+     \ifconditional\c_page_sides_keep_together
+       \clf_interceptsamepagecontent\b_page_sides_spill_over
+     \fi
      \global\settrue\c_page_sides_delayed
      \global\c_page_sides_m_of_lines\c_page_sides_n_of_lines
      \ifcase\c_page_sides_page_method
-       \page_otr_fill_and_eject_page
+     \page_otr_fill_and_eject_page
      \or
-       \page_otr_force_new_page_one
+     \page_otr_force_new_page_one
      \else
-       \page_otr_fill_and_eject_page
+     \page_otr_fill_and_eject_page
+     \fi
+     \ifvoid\b_page_sides_spill_over\else
+       \box\b_page_sides_spill_over
      \fi
-     \global\c_page_sides_n_of_lines\c_page_sides_m_of_lines
      \page_sides_analyse_space
     %\page_sides_inject_before
      \page_sides_inject_dummy_lines
diff --git a/tex/context/base/mkxl/page-txt.mklx b/tex/context/base/mkxl/page-txt.mklx
index 27cf50773..4d80cfa76 100644
--- a/tex/context/base/mkxl/page-txt.mklx
+++ b/tex/context/base/mkxl/page-txt.mklx
@@ -495,10 +495,10 @@
    \ifempty\p_text
      \kern\leftedgewidth
    \else
-      \hbox to \leftedgewidth\bgroup
-        \hss
-        \page_layouts_process_element_indeed#style#color#width%
-      \egroup
+     \hbox to \leftedgewidth\bgroup
+       \hss
+       \page_layouts_process_element_indeed#style#color#width%
+     \egroup
    \fi}
 
 \def\page_layouts_left_edge_element#text#style#color#width%
diff --git a/tex/context/base/mkxl/spac-ver.lmt b/tex/context/base/mkxl/spac-ver.lmt
index 955d65f4f..9d58ff167 100644
--- a/tex/context/base/mkxl/spac-ver.lmt
+++ b/tex/context/base/mkxl/spac-ver.lmt
@@ -33,7 +33,6 @@ if not modules then modules = { } end modules ['spac-ver'] = {
 
 local next, type, tonumber = next, type, tonumber
 local gmatch, concat = string.gmatch, table.concat
-local ceil, floor, abs = math.ceil, math.floor, math.abs
 local lpegmatch = lpeg.match
 local unpack = unpack or table.unpack
 local allocate = utilities.storage.allocate
@@ -147,6 +146,7 @@ local getheight           = nuts.getheight
 local setdepth            = nuts.setdepth
 local getdepth            = nuts.getdepth
 local setnext             = nuts.setnext
+local setprev             = nuts.setprev
 
 local find_node_tail      = nuts.tail
 local flushnode           = nuts.flushnode
@@ -197,6 +197,8 @@ local splittopskip_code   = gluecodes.splittopskip
 
 local linelist_code       = nodes.listcodes.line
 
+local setvisual           = function(...) setvisual = nuts.setvisual return setvisual(...) end
+
 local properties          = nodes.properties.data
 
 local vspacing            = builders.vspacing or { }
@@ -355,6 +357,9 @@ end
 
 local snap_hlist  do
 
+    local floor = math.floor
+    local ceil  = math.ceil
+
     local function fixedprofile(current)
         local profiling = builders.profiling
         return profiling and profiling.fixedprofile(current)
@@ -749,6 +754,8 @@ local method = 1 -- better tracing
 -- local method = 3
 -- local method = 4
 
+-- todo: not true but only visual a_visual,tex.getattribute(a_visual)
+
 if method == 1 then
 
     local registervalue = attributes.registervalue
@@ -939,6 +946,7 @@ do
     local function inject()
         local n = new_glue(b_amount,b_stretch,b_shrink)
         setspecification(n,b_category,b_penalty,b_order or 1)
+        setvisual(k)
         write_node(n)
     end
 
@@ -1064,6 +1072,7 @@ do
         local n = new_glue()
      -- setattrs(n,false,a_skipcategory,categories.penalty,a_skippenalty,penalty,a_skiporder,1)
         setspecification(n,categories.penalty,penalty,1)
+        setvisual(k)
         write_node(n)
     end
 
@@ -1071,6 +1080,7 @@ do
         local n = new_glue(amount)
      -- setattrs(n,false,a_skipcategory,categories.largest,a_skippenalty,false,a_skiporder,1)
         setspecification(n,categories.largest,false,1)
+        setvisual(k)
         write_node(n)
     end
 
@@ -1078,6 +1088,7 @@ do
         local n = new_glue()
      -- setattrs(n,false,a_skipcategory,categories.disable,a_skippenalty,false,a_skiporder,1)
         setspecification(n,categories.disable,false,1)
+        setvisual(k)
         write_node(n)
     end
 
@@ -1239,16 +1250,22 @@ do
         end
         if width == 0 then
             -- do nothing
-        elseif where == "after" then
-            head, current = insertnodeafter(head,current,new_rule(w,h,d))
-            head, current = insertnodeafter(head,current,new_kern(width))
-            head, current = insertnodeafter(head,current,new_rule(w,h,d))
         else
-            local c = current
-            head, current = insertnodebefore(head,current,new_rule(w,h,d))
-            head, current = insertnodebefore(head,current,new_kern(width))
-            head, current = insertnodebefore(head,current,new_rule(w,h,d))
-            current = c
+            local b = new_rule(w,h,d)
+            local k = new_kern(width)
+            local a = new_rule(w,h,d)
+            setvisual(k)
+            if where == "after" then
+                head, current = insertnodeafter(head,current,b)
+                head, current = insertnodeafter(head,current,k)
+                head, current = insertnodeafter(head,current,a)
+            else
+                local c = current
+                head, current = insertnodebefore(head,current,b)
+                head, current = insertnodebefore(head,current,k)
+                head, current = insertnodebefore(head,current,a)
+                current = c
+            end
         end
         if trace then
             report_vspacing("inserting forced skip of %p",width)
@@ -1428,9 +1445,11 @@ do
             texsetdimen("global","d_spac_overlay",-delta) -- for tracing
             -- we should adapt pagetotal ! (need a hook for that) .. now we have the wrong pagebreak
             local k = new_kern(-delta)
+            setvisual(k)
             head = insertnodebefore(head,n,k)
             if n_ht > p_ht then
                 local k = new_kern(n_ht-p_ht)
+                setvisual(k)
                 head = insertnodebefore(head,p,k)
             end
             if trace_vspacing then
@@ -1577,6 +1596,7 @@ do
                                 local d = g - t
                                 if d < -e then
                                     local penalty = new_penalty(1000000)
+                                    setvisual(penalty)
                                     setlink(penalty,head)
                                     head = penalty
                                     report_snapper("force pagebreak due to extra space at bottom: %p",e)
@@ -1605,6 +1625,7 @@ do
         local function flush(why)
             if penalty_data then
                 local p = new_penalty(penalty_data)
+                setvisual(p)
                 if trace then
                     trace_done("flushed due to " .. why,p)
                 end
@@ -2100,6 +2121,7 @@ do
         if penalty_data then
             tail = find_node_tail(head)
             local p = new_penalty(penalty_data)
+            setvisual(p)
             if trace then
                 trace_done("result",p)
             end
@@ -2372,6 +2394,7 @@ do
     end
 
     local trace       = false
+    local abs         = math.abs
  -- local last        = nil
     local vmode_code  = tex.modelevels.vertical
     local temp_code   = nodecodes.temp
@@ -2503,14 +2526,13 @@ do
 
     local trace = false  trackers.register("otr.forcestrutdepth", function(v)
         trace = v and function(n)
-            nuts.setvisual(nuts.tonut(n),nodes.visualizers.modes.depth)
+            setvisual(nuts.tonut(n),nodes.visualizers.modes.depth)
         end
     end)
 
     local treversenode = nuts.treversers.node
 
-    function vspacing.forcestrutdepth()
-        -- check if in mvl
+    local function flushcontributions()
         if texgetnest("ptr") == 0 then
             -- this flushes the contributions
             local prev  = nil
@@ -2526,6 +2548,17 @@ do
                     prev = head
                 end
             end
+            return true
+        else
+            return false
+        end
+    end
+
+    vspacing.flushcontributions = flushcontributions
+
+    function vspacing.forcestrutdepth()
+        -- check if in mvl
+        if flushcontributions() then
             -- now we consult the last line (if present)
             local head, tail = getspeciallist("pagehead")
             if tail then
@@ -2569,6 +2602,57 @@ do
         end
     end
 
+    -- highly experimental, only for m4all now; todo: tracing
+
+    local setbox = nuts.setbox
+
+    function vspacing.interceptsamepagecontent(box)
+        if vspacing.flushcontributions() then
+            -- now we consult the last line (if present)
+            local head, tail = getspeciallist("pagehead")
+            if tail and getid(tail) == glue_code then
+                local prev = getprev(tail)
+                if prev and getid(prev) == penalty_code then
+                    if getpenalty(prev) >= 10000 then
+                        local state = nil
+                        local first = nil
+                        local last  = tail
+                        local c = getprev(prev)
+                        while c do
+                            if getid(c) == glue_code then
+                                local p = getprev(c)
+                                if p and getid(p) == penalty_code then
+                                    if getpenalty(p) < 10000 then
+                                        state = 1
+                                    end
+                                else
+                                    state = 2
+                                    break
+                                end
+                            end
+                            first = c
+                            c = getprev(c)
+                        end
+                        if first and first ~= head then
+                            setnext(getprev(first))
+                            setprev(first)
+                            local vbox = vpack_node(first)
+                            setvisual(vbox)
+                            setbox(box,vbox)
+                            report_vspacing("same page intercept, case %i")
+                        end
+                    end
+                end
+            end
+        end
+    end
+
+    interfaces.implement {
+        name      = "interceptsamepagecontent",
+        arguments = "integer",
+        actions   = vspacing.interceptsamepagecontent,
+    }
+
  -- interfaces.implement {
  --     name    = "removelastline",
  --     actions = function()
diff --git a/tex/context/base/mkxl/strc-flt.mklx b/tex/context/base/mkxl/strc-flt.mklx
index 94d06fd92..862aa7ff9 100644
--- a/tex/context/base/mkxl/strc-flt.mklx
+++ b/tex/context/base/mkxl/strc-flt.mklx
@@ -977,6 +977,9 @@
    \doifelseinset\v!force\floatlocation
      {\global\settrue\c_page_sides_shape_down}
      {\global\setfalse\c_page_sides_shape_down}%
+   \doifelseinset\v!keeptogether\floatlocation
+     {\global\settrue\c_page_sides_keep_together}
+     {\global\setfalse\c_page_sides_keep_together}%
    \doifelseinset\v!nonumber\floatlocation
      {\global\nofloatnumbertrue}%
      {\doifelse{\floatcaptionparameter\c!number}\v!yes
diff --git a/tex/context/base/mkxl/strc-reg.lmt b/tex/context/base/mkxl/strc-reg.lmt
index ccb43bc28..a45f23bf0 100644
--- a/tex/context/base/mkxl/strc-reg.lmt
+++ b/tex/context/base/mkxl/strc-reg.lmt
@@ -9,7 +9,7 @@ if not modules then modules = { } end modules ['strc-reg'] = {
 local next, type, tonumber, rawget = next, type, tonumber, rawget
 local char, format, gmatch = string.char, string.format, string.gmatch
 local equal, concat, remove = table.are_equal, table.concat, table.remove
-local lpegmatch, P, C, Ct = lpeg.match, lpeg.P, lpeg.C, lpeg.Ct
+local lpegmatch, lpegpatterns, P, C, Ct, Cs = lpeg.match, lpeg.patterns, lpeg.P, lpeg.C, lpeg.Ct, lpeg.Cs
 local allocate = utilities.storage.allocate
 
 local trace_registers    = false  trackers.register("structures.registers", function(v) trace_registers = v end)
@@ -442,13 +442,21 @@ implement {
     arguments = "2 strings",
 }
 
-
-local p_s = P("+")
+local p_s = P("+") -- & obsolete in mkiv
 local p_e = P("&") * (1-P(";"))^0 * P(";")
 local p_r = C((p_e + (1-p_s))^0)
 
+local p_t = Cs ( (
+    lpegpatterns.nestedbraces
+--+ lpegpatterns.nestedbrackets
+  + lpegpatterns.nestedparents
+  + P("$") * (1-P("$"))^1 * P("$")
+  + (1-p_s)
+  )^1)
+
 local entrysplitter_xml = Ct(p_r * (p_s * p_r)^0) -- bah
-local entrysplitter_tex = lpeg.tsplitat('+')      -- & obsolete in mkiv
+----- entrysplitter_tex = lpeg.tsplitat('+')
+local entrysplitter_tex = Ct((p_t * p_s^-1)^0)
 
 local tagged = { }
 
diff --git a/tex/context/base/mkxl/strc-ren.mkxl b/tex/context/base/mkxl/strc-ren.mkxl
index f7a1ec686..012722f6e 100644
--- a/tex/context/base/mkxl/strc-ren.mkxl
+++ b/tex/context/base/mkxl/strc-ren.mkxl
@@ -395,6 +395,7 @@
      \noindentation
    \else
      \ignoreparskip
+     \doindentation
    \fi}
 
 % nice testcase
diff --git a/tex/context/base/mkxl/strc-sec.mkxl b/tex/context/base/mkxl/strc-sec.mkxl
index ba250311e..0776249fa 100644
--- a/tex/context/base/mkxl/strc-sec.mkxl
+++ b/tex/context/base/mkxl/strc-sec.mkxl
@@ -1240,7 +1240,7 @@
            \spac_vspacing_same_page\currentheadlevel\zerocount
          \fi
          \headparameter\c!before\relax
-         \indent
+         \indent % hm, not a clever one?
      \else
          \page_otr_command_flush_side_floats
          \ifconditional\c_strc_sectioning_auto_break
@@ -1275,7 +1275,6 @@
      \spac_vspacing_same_page\currentheadlevel\plustwo
    \fi}
 
-
 % We do support negative numbers but it can have side effects that we won't catch:
 %
 % \chapter{some} \setupheadnumber[chapter][3] \chapter{more}
diff --git a/tex/context/base/mkxl/supp-box.mkxl b/tex/context/base/mkxl/supp-box.mkxl
index 8e5b38365..b980107e4 100644
--- a/tex/context/base/mkxl/supp-box.mkxl
+++ b/tex/context/base/mkxl/supp-box.mkxl
@@ -17,6 +17,11 @@
 
 \registerctxluafile{supp-box}{autosuffix,optimize}
 
+\permanent\integerdef\negatelistsigncode\numexpr
+    \negatexlistsigncode
+   +\negateylistsigncode
+\relax
+
 %D And some dimensions:
 
 \newdimen\givenwidth
@@ -2893,6 +2898,15 @@
 
 \untraced\permanent\protected\def\showboxhere{\showbox nolevels content online }
 
+% % possible extra interface, currently disabled
+%
+% \permanent\tolerant\protected\def\registeranchorbox[#1]#*[#2]%
+%   {\dowithnextbox
+%      {\clf_registeranchorbox
+%         \namedboxanchor{#1}%
+%         \ifcstok{#2}\v!before\minusone\else\plusone\fi
+%         \box\nextbox}}
+
 \protect \endinput
 
 % a bit of test code:
diff --git a/tex/context/base/mkxl/toks-aux.lmt b/tex/context/base/mkxl/toks-aux.lmt
index 1d48d8838..c7d2fb2fc 100644
--- a/tex/context/base/mkxl/toks-aux.lmt
+++ b/tex/context/base/mkxl/toks-aux.lmt
@@ -171,6 +171,8 @@ tex.normalizecodes     = getthem(tex.getnormalizevalues,     "normalizecode")
 tex.automigrationcodes = getthem(tex.getautomigrationvalues, "automigrationcode") -- only at lua end
 tex.parcontextcodes    = getthem(tex.getparcontextvalues,    "parcontextcode")
 tex.textcontrolcodes   = getthem(tex.gettextcontrolvalues,   "") -- only at lua end
+tex.listanchorcodes    = getthem(tex.getlistanchorvalues,    "listanchorcode")
+tex.listsigncodes      = getthem(tex.getlistsignvalues,      "listsigncode")
 
 function tex.stringtocodesbitmap(str,codes)
     local bitmap = 0
diff --git a/tex/context/base/mkxl/trac-vis.lmt b/tex/context/base/mkxl/trac-vis.lmt
index 7f9341722..e2c4133b4 100644
--- a/tex/context/base/mkxl/trac-vis.lmt
+++ b/tex/context/base/mkxl/trac-vis.lmt
@@ -292,7 +292,14 @@ local function setvisual(n,a,what,list) -- this will become more efficient when
 end
 
 function nuts.setvisual(n,mode)
-    setattr(n,a_visual,setvisual(mode,getattr(n,a_visual),true))
+    if mode then
+        setattr(n,a_visual,setvisual(mode,getattr(n,a_visual),true))
+    else
+        local a = texgetattribute(a_visual)
+        if a ~= unsetvalue then
+            setattr(n,a_visual,a)
+        end
+    end
 end
 
 function nuts.setvisuals(n,mode) -- currently the same
@@ -792,7 +799,6 @@ local ruledbox do
 
     local getshift       = nuts.getshift
     local getorientation = nuts.getorientation
-    local setorientation = nuts.setorientation
 
     setmetatableindex(o_cache,function(t,size)
         local rule   = new_rule(2*size,size,size)
@@ -808,7 +814,7 @@ local ruledbox do
         local wd, ht, dp = getwhd(current)
         local force_origin = wd == 0 or (dp + ht) == 0
             local shift = getshift(current)
-local orientation, xoffset, yoffset = getorientation(current)
+            local orientation, xoffset, yoffset = getorientation(current)
             local next = getnext(current)
             local prev = previous
             setboth(current)
@@ -884,7 +890,6 @@ local orientation, xoffset, yoffset = getorientation(current)
                 end
                 info = new_hlist(info,wd,ht,dp,shift)
             end
--- setorientation(info,orientation,xoffset,yoffset)
             if next then
                 setlink(info,next)
             end
diff --git a/tex/context/interface/mkii/keys-ro.xml b/tex/context/interface/mkii/keys-ro.xml
index 3516282e1..824015281 100644
--- a/tex/context/interface/mkii/keys-ro.xml
+++ b/tex/context/interface/mkii/keys-ro.xml
@@ -303,6 +303,7 @@
 		<cd:variable name='july' value='iulie'/>
 		<cd:variable name='june' value='iunie'/>
 		<cd:variable name='keep' value='mentine'/>
+		<cd:variable name='keeptogether' value='keeptogether'/>
 		<cd:variable name='kerncharacters' value='kerncharacters'/>
 		<cd:variable name='knockout' value='knockout'/>
 		<cd:variable name='label' value='eticheta'/>
@@ -1235,7 +1236,7 @@
 		<cd:constant name='solution' value='solution'/>
 		<cd:constant name='sort' value='sort'/>
 		<cd:constant name='sorttype' value='sorttype'/>
-		<cd:constant name='source' value='sursa'/>
+		<cd:constant name='source' value='source'/>
 		<cd:constant name='space' value='spatiu'/>
 		<cd:constant name='spaceafter' value='spatiudupa'/>
 		<cd:constant name='spaceafterside' value='spaceafterside'/>
@@ -1286,6 +1287,7 @@
 		<cd:constant name='synonymcommand' value='synonymcommand'/>
 		<cd:constant name='synonymstyle' value='stilsinonim'/>
 		<cd:constant name='tab' value='tab'/>
+		<cd:constant name='target' value='target'/>
 		<cd:constant name='text' value='text'/>
 		<cd:constant name='textalign' value='textalign'/>
 		<cd:constant name='textalternative' value='textalternative'/>
diff --git a/tex/generic/context/luatex/luatex-fonts-merged.lua b/tex/generic/context/luatex/luatex-fonts-merged.lua
index c42285235..f4d50e351 100644
--- a/tex/generic/context/luatex/luatex-fonts-merged.lua
+++ b/tex/generic/context/luatex/luatex-fonts-merged.lua
@@ -1,6 +1,6 @@
 -- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
 -- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date  : 2021-12-25 00:55
+-- merge date  : 2021-12-30 19:00
 
 do -- begin closure to overcome local limits and interference