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+%D \module
+%D [ file=mult-sys,
+%D version=1996.06.01,
+%D title=\CONTEXT\ Multilingual Macros,
+%D subtitle=System,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+%D In boring module we define a lot of obscure but useful
+%D system constants. By doing so we save lots of memory while
+%D at the same time we prevent ourself from typing errors.
+
+\writestatus{loading}{ConTeXt Multilingual Macros / System}
+
+\unprotect
+
+%D The constants are grouped in such a way that there is a
+%D minimal change of conflicts.
+%D
+%D \starttyping
+%D \definesystemconstants {word}
+%D \definemessageconstant {word}
+%D \stoptyping
+%D
+%D This commands generate \type{\s!word} and \type{\m!word}.
+
+\definesystemconstant {hans}
+\definesystemconstant {taco}
+
+%D First we define some system constants used for both the
+%D multi||lingual interface and multi||linguag typesetting.
+
+\definesystemconstant {afrikaans} \definesystemconstant {af}
+\definesystemconstant {arabic} \definesystemconstant {ar}
+\definesystemconstant {catalan} \definesystemconstant {ca}
+\definesystemconstant {chinese} \definesystemconstant {cn}
+\definesystemconstant {croatian} \definesystemconstant {hr}
+\definesystemconstant {czech} \definesystemconstant {cs} \definesystemconstant {cz}
+\definesystemconstant {danish} \definesystemconstant {da}
+\definesystemconstant {dutch} \definesystemconstant {nl}
+\definesystemconstant {english} \definesystemconstant {en}
+\definesystemconstant {finish} \definesystemconstant {fi}
+\definesystemconstant {french} \definesystemconstant {fr}
+\definesystemconstant {german} \definesystemconstant {de}
+\definesystemconstant {hungarian} \definesystemconstant {hu}
+\definesystemconstant {italian} \definesystemconstant {it}
+\definesystemconstant {latin} \definesystemconstant {la}
+\definesystemconstant {lithuanian} \definesystemconstant {lt}
+\definesystemconstant {bokmal} \definesystemconstant {nb} \definesystemconstant {norwegian} \definesystemconstant {no}
+\definesystemconstant {nynorsk} \definesystemconstant {nn}
+\definesystemconstant {polish} \definesystemconstant {pl}
+\definesystemconstant {persian} \definesystemconstant {pe}
+\definesystemconstant {portuguese} \definesystemconstant {pt}
+\definesystemconstant {romanian} \definesystemconstant {ro}
+\definesystemconstant {russian} \definesystemconstant {ru}
+\definesystemconstant {slovak} \definesystemconstant {sk}
+\definesystemconstant {slovenian} \definesystemconstant {sl}
+\definesystemconstant {slovene}
+\definesystemconstant {spanish} \definesystemconstant {es}
+\definesystemconstant {swedish} \definesystemconstant {sv}
+\definesystemconstant {turkish} \definesystemconstant {tr}
+\definesystemconstant {turkmen} \definesystemconstant {tk}
+\definesystemconstant {gbenglish} \definesystemconstant {gb} \definesystemconstant {ukenglish} \definesystemconstant {uk}
+\definesystemconstant {usenglish} \definesystemconstant {us}
+\definesystemconstant {ukrainian} \definesystemconstant {ua}
+\definesystemconstant {greek} \definesystemconstant {gr}
+\definesystemconstant {ancientgreek} \definesystemconstant {agr}
+\definesystemconstant {vietnamese} \definesystemconstant {vi} \definesystemconstant {vn}
+
+%D For proper \UNICODE\ support we need a few font related
+%D constants.
+
+\definesystemconstant {BoldItalic}
+\definesystemconstant {BoldSlanted}
+\definesystemconstant {Bold}
+\definesystemconstant {Italic}
+\definesystemconstant {Regular}
+\definesystemconstant {Slanted}
+\definesystemconstant {Unicode}
+
+\definesystemconstant {Serif} \definesystemconstant {Regular}
+\definesystemconstant {Sans} \definesystemconstant {Support}
+\definesystemconstant {Mono} \definesystemconstant {Type}
+\definesystemconstant {Math}
+\definesystemconstant {Handwriting}
+\definesystemconstant {Calligraphy}
+\definesystemconstant {Casual}
+
+\definesystemconstant {SerifBold} \definesystemconstant {SansBold} \definesystemconstant {MonoBold}
+\definesystemconstant {SerifItalic} \definesystemconstant {SansItalic} \definesystemconstant {MonoItalic}
+\definesystemconstant {SerifBoldItalic} \definesystemconstant {SansBoldItalic} \definesystemconstant {MonoBoldItalic}
+\definesystemconstant {SerifSlanted} \definesystemconstant {SansSlanted} \definesystemconstant {MonoSlanted}
+\definesystemconstant {SerifBoldSlanted} \definesystemconstant {SansBoldSlanted} \definesystemconstant {MonoBoldSlanted}
+\definesystemconstant {SerifCaps} \definesystemconstant {SansCaps} \definesystemconstant {MonoCaps}
+
+\definesystemconstant {Normal}
+\definesystemconstant {Caps}
+
+\definesystemconstant {mnem} % kind of generic short tag
+
+\definesystemconstant {file}
+\definesystemconstant {name}
+\definesystemconstant {spec}
+
+\definesystemconstant {serif}
+\definesystemconstant {sans}
+\definesystemconstant {mono}
+\definesystemconstant {math}
+\definesystemconstant {handwriting}
+\definesystemconstant {calligraphy}
+\definesystemconstant {casual}
+\definesystemconstant {fax}
+
+\definesystemconstant {fallback}
+
+\definesystemconstant {none}
+\definesystemconstant {default}
+\definesystemconstant {smallcaps}
+
+%D As the name of their define command states, the next set of
+%D constants is used in the message macro's.
+
+\definemessageconstant {check}
+\definemessageconstant {colors}
+\definemessageconstant {columns}
+\definemessageconstant {encodings}
+\definemessageconstant {regimes}
+\definemessageconstant {figures}
+\definemessageconstant {fields}
+\definemessageconstant {files}
+\definemessageconstant {floatblocks}
+\definemessageconstant {fonts}
+\definemessageconstant {handlings}
+\definemessageconstant {interactions}
+\definemessageconstant {javascript}
+\definemessageconstant {layouts}
+\definemessageconstant {linguals}
+\definemessageconstant {references}
+\definemessageconstant {specials}
+\definemessageconstant {structures}
+\definemessageconstant {symbols}
+\definemessageconstant {systems}
+\definemessageconstant {lua}
+\definemessageconstant {textblocks}
+\definemessageconstant {verbatims}
+\definemessageconstant {versions}
+\definemessageconstant {metapost}
+\definemessageconstant {chemicals}
+\definemessageconstant {publications}
+
+%D Net come some \CONTEXT\ constants, used in the definition
+%D of private commands:
+
+\definesystemconstant {tex}
+\definesystemconstant {xml}
+\definesystemconstant {lua}
+
+\definesystemconstant {next}
+\definesystemconstant {pickup}
+\definesystemconstant {ascii}
+\definesystemconstant {default}
+\definesystemconstant {unknown}
+\definesystemconstant {action}
+\definesystemconstant {compare}
+\definesystemconstant {do}
+\definesystemconstant {dodo}
+\definesystemconstant {complex}
+\definesystemconstant {simple}
+\definesystemconstant {start}
+\definesystemconstant {stop}
+\definesystemconstant {dummy}
+\definesystemconstant {local}
+\definesystemconstant {global}
+\definesystemconstant {done}
+\definesystemconstant {font}
+\definesystemconstant {link}
+\definesystemconstant {parent}
+\definesystemconstant {clone}
+\definesystemconstant {section} \let\v!sectionlevel\s!section % for old times sake
+\definesystemconstant {handler}
+\definesystemconstant {counter}
+\definesystemconstant {single}
+\definesystemconstant {multi}
+
+\definesystemconstant {hasnumber}
+\definesystemconstant {hastitle}
+\definesystemconstant {hascaption}
+\definesystemconstant {haslevel}
+
+\definesystemconstant {mkiv}
+\definesystemconstant {mkii}
+\definesystemconstant {entities}
+
+\definesystemconstant {normal}
+\definesystemconstant {bold}
+\definesystemconstant {italic}
+\definesystemconstant {slanted}
+
+\definesystemconstant {default}
+\definesystemconstant {smallcaps}
+
+\definesystemconstant {text}
+\definesystemconstant {page}
+\definesystemconstant {leftpage}
+\definesystemconstant {rightpage}
+\definesystemconstant {somewhere}
+
+%D A more experienced \TEX\ user will recognize the next four
+%D constants. We need these because font-definitions are
+%D partially english.
+
+\definesystemconstant {run}
+
+\definesystemconstant {fam}
+\definesystemconstant {text}
+\definesystemconstant {script}
+\definesystemconstant {scriptscript}
+
+\definesystemconstant {lefthyphenmin}
+\definesystemconstant {righthyphenmin}
+\definesystemconstant {lefthyphenchar}
+\definesystemconstant {righthyphenchar}
+
+\definesystemconstant {skewchar}
+\definesystemconstant {hyphenchar}
+\definesystemconstant {catcodes}
+\definesystemconstant {encoding}
+\definesystemconstant {resource}
+\definesystemconstant {mapping}
+\definesystemconstant {language}
+\definesystemconstant {patterns}
+\definesystemconstant {rname}
+\definesystemconstant {rscale}
+\definesystemconstant {handling}
+\definesystemconstant {features}
+\definesystemconstant {fallbacks}
+\definesystemconstant {goodies}
+\definesystemconstant {background}
+\definesystemconstant {ucmap}
+
+\definesystemconstant {property}
+\definesystemconstant {overprint}
+\definesystemconstant {layer}
+\definesystemconstant {effect}
+\definesystemconstant {negative}
+\definesystemconstant {color}
+\definesystemconstant {transparency}
+
+\definesystemconstant {black}
+\definesystemconstant {white}
+
+\definesystemconstant {format}
+\definesystemconstant {extensions}
+\definesystemconstant {initializations}
+
+%D Just to be complete we define the standard \TEX\ units.
+
+\definesystemconstant {cm}
+\definesystemconstant {em}
+\definesystemconstant {ex}
+\definesystemconstant {mm}
+\definesystemconstant {pt}
+\definesystemconstant {sp}
+\definesystemconstant {bp}
+\definesystemconstant {in}
+\definesystemconstant {pc}
+\definesystemconstant {cm}
+\definesystemconstant {dd}
+\definesystemconstant {cc}
+\definesystemconstant {nd}
+\definesystemconstant {nc}
+
+%D These constants are used for internal and utility
+%D commands.
+
+\definesystemconstant {check}
+\definesystemconstant {reset}
+\definesystemconstant {set}
+
+\definesystemconstant {entrya}
+\definesystemconstant {entryb}
+\definesystemconstant {entryc}
+\definesystemconstant {entryd}
+\definesystemconstant {entry}
+\definesystemconstant {see}
+\definesystemconstant {from}
+\definesystemconstant {to}
+\definesystemconstant {line}
+\definesystemconstant {page}
+\definesystemconstant {realpage}
+\definesystemconstant {userpage}
+\definesystemconstant {subpage}
+
+\definesystemconstant {synonym}
+
+\definesystemconstant {reference}
+\definesystemconstant {main}
+
+\definesystemconstant {list}
+
+\definesystemconstant {item}
+\definesystemconstant {itemcount}
+
+\definesystemconstant {number}
+\definesystemconstant {references}
+\definesystemconstant {between}
+\definesystemconstant {format}
+\definesystemconstant {old}
+
+\definesystemconstant {thisisblock}
+\definesystemconstant {thiswasblock}
+
+\definesystemconstant {figurepreset}
+
+\definesystemconstant {empty}
+
+%D Some \CONTEXT\ commands take a two||pass aproach to
+%D optimize the typesetting. Each two||pass object has its
+%D own tag.
+
+\definesystemconstant {pass}
+
+\definesystemconstant {data}
+\definesystemconstant {float}
+\definesystemconstant {list}
+\definesystemconstant {page}
+\definesystemconstant {subpage}
+\definesystemconstant {margin}
+\definesystemconstant {profile}
+\definesystemconstant {versionbegin}
+\definesystemconstant {versionend}
+\definesystemconstant {cross}
+\definesystemconstant {paragraph}
+
+%D A lot of macros use tags to distinguish between different
+%D objects, e.g. lists and registers.
+
+\definesystemconstant {prt} % part (deel)
+\definesystemconstant {chp} % chapter (hoofdstuk)
+\definesystemconstant {sec} % section (paragraaf)
+\definesystemconstant {tit} % title (titel)
+\definesystemconstant {sub} % subject (onderwerp)
+\definesystemconstant {mar} % margin (marge)
+\definesystemconstant {num} % number (doornummeren)
+\definesystemconstant {def} % definition (doordefinieren)
+\definesystemconstant {for} % formula (formule)
+\definesystemconstant {fnt} % footnote (voetnoot)
+\definesystemconstant {ind} % index (register)
+\definesystemconstant {lin} % linked index
+\definesystemconstant {lst} % list (opsomming)
+\definesystemconstant {flt} % float (plaatsblok)
+\definesystemconstant {pag} % page (pagina)
+\definesystemconstant {txt} % text (tekst)
+\definesystemconstant {ref} % reference (verwijzing)
+\definesystemconstant {lab} % label (label)
+\definesystemconstant {aut} % automatic (inhoud, index)
+\definesystemconstant {vwa} % automatic (illustrations)
+\definesystemconstant {vwb} % automatic (illustrations)
+
+\definesystemconstant {kop} % kop % still dutch
+
+%D Reference labels can be tagged by users, for instance by
+%D means of \type{tag:}. The reference mechanism itself uses
+%D some tags too. These are definitely not to be used by users.
+%D Here they are:
+
+\definereferenceconstant {cross} {:c:} % cross reference
+\definereferenceconstant {view} {:v:} % view reference
+\definereferenceconstant {viewa} {:a:} % view reference test a
+\definereferenceconstant {viewb} {:b:} % view reference test b
+\definereferenceconstant {page} {:p:} % page referece
+\definereferenceconstant {list} {:l:} % list reference
+\definereferenceconstant {exec} {:e:} % execution reference
+\definereferenceconstant {form} {:m:} % form reference
+\definereferenceconstant {syst} {:s:} % system reference
+
+\definereferenceconstant {from} {:f:} % from list reference
+\definereferenceconstant {to} {:t:} % to list reference
+
+\definereferenceconstant {object} {:o:} % object reference
+\definereferenceconstant {driver} {:d:} % driver object reference
+\definereferenceconstant {widget} {:w:} % field chain reference
+
+\definereferenceconstant {java} {:j:} % java scripts
+
+%D When we use numbers and dimensions the same applies as
+%D with the keywords like \type{width} and \type{plus}
+%D mentioned earlier.
+
+\def\!!ten {10}
+\def\!!twelve {12}
+\def\!!hundred {100}
+\def\!!thousand {1000}
+\def\!!tenthousand {10000}
+\def\!!maxcard {65536}
+\def\!!medcard {32768}
+
+\def\!!zeropoint {0pt}
+\def\!!onepoint {1pt}
+\def\!!twopoint {2pt}
+\def\!!threepoint {3pt}
+\def\!!fourpoint {4pt}
+\def\!!fivepoint {5pt}
+\def\!!sixpoint {6pt}
+\def\!!sevenpoint {7pt}
+\def\!!eightpoint {8pt}
+\def\!!ninepoint {9pt}
+\def\!!tenpoint {10pt}
+\def\!!elevenpoint {11pt}
+\def\!!twelvepoint {12pt}
+\def\!!fourteenpointfour {14.4pt}
+
+\let\onerealpoint\onepoint % needed for latex
+
+% D Another optimization is:
+%
+% \let\points\onepoint
+
+%D A rough test is:
+%D
+%D \starttyping
+%D \def\TestMe % 7.75 sec on a P4/2G
+%D {\dimen0=10\points\dimen0=10\points\dimen0=10\points\dimen0=10\points\dimen0=10\points
+%D \dimen0=10\points\dimen0=10\points\dimen0=10\points\dimen0=10\points\dimen0=10\points}
+%D
+%D \def\TestMe % 11.5 sec on a P4/2G
+%D {\dimen0=10pt\dimen0=10pt\dimen0=10pt\dimen0=10pt\dimen0=10pt%
+%D \dimen0=10pt\dimen0=10pt\dimen0=10pt\dimen0=10pt\dimen0=10pt}
+%D
+%D \def\TestMe % 12.5 sec on a P4/2G
+%D {\dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt%
+%D \dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt\dimen0=10\s!pt}
+%D
+%D \testfeatureonce {500000}{\TestMe}
+%D \stoptyping
+
+%D Variables are composed of a command specific tag and a user
+%D supplied variable (system constant). The first tag \type{ag}
+%D for instance is available as \type{\??ag} and expands to
+%D \type{@@ag} in composed variables.
+
+% vervallen : hd hr hm vt vr vm tr tn te br bm bo on om or
+
+\definesystemvariable {ab} % AlignedBoxes
+\definesystemvariable {ac} % ACcent
+\definesystemvariable {ae} % AttributEs
+\definesystemvariable {ag} % AchterGrond
+\definesystemvariable {al} % ALinea's
+\definesystemvariable {am} % interActieMenu
+\definesystemvariable {an} % ANchor
+\definesystemvariable {as} % AlignmentSwitch
+\definesystemvariable {at} % ATtachments
+\definesystemvariable {ba} % synchronisatieBAlk
+\definesystemvariable {bc} % BaCkend
+\definesystemvariable {be} % startstop (BeginEnd)
+\definesystemvariable {bj} % BlokJe
+\definesystemvariable {bk} % Blokken (floats)
+\definesystemvariable {bl} % BLanko
+\definesystemvariable {bg} % BleedinG
+\definesystemvariable {bm} % BookMark
+\definesystemvariable {bo} % BlankO (definitions)
+\definesystemvariable {bp} % BreakPoint
+\definesystemvariable {br} % sideBaR
+\definesystemvariable {bs} % SelecteerBlokken
+\definesystemvariable {bt} % BuTton
+\definesystemvariable {bu} % BUffer
+\definesystemvariable {bv} % Brieven
+\definesystemvariable {by} % Per
+\definesystemvariable {cb} % CollectBox
+\definesystemvariable {cc} % Comment
+\definesystemvariable {ce} % CasEs
+\definesystemvariable {cf} % Style (ColorFont)
+\definesystemvariable {ch} % CHaracterspacing
+\definesystemvariable {ci} % CItaat
+\definesystemvariable {ck} % Character Kerning
+\definesystemvariable {cl} % kleur (CoLor setup)
+\definesystemvariable {cn} % CollumN
+\definesystemvariable {cm} % CheMical
+\definesystemvariable {co} % COmbinaties
+\definesystemvariable {cp} % CliP
+\definesystemvariable {cr} % kleur (ColoR)
+\definesystemvariable {cs} % kleur (ColorSeparation
+\definesystemvariable {cv} % ConVersie
+\definesystemvariable {cy} % CrYteria
+\definesystemvariable {da} % DAte
+\definesystemvariable {db} % Labels
+\definesystemvariable {dc} % DroppedCaps
+\definesystemvariable {dd} % DoorDefinieren
+\definesystemvariable {de} % DEel
+\definesystemvariable {di} % DIrections
+\definesystemvariable {dl} % DunneLijnen
+\definesystemvariable {dn} % DoorNummeren
+\definesystemvariable {dm} % DefineMeasure
+\definesystemvariable {do} % DefinieerOpmaak
+\definesystemvariable {du} % DUmmy
+\definesystemvariable {ds} % DoorSpringen
+\definesystemvariable {ef} % ExternFiguur
+\definesystemvariable {ec} % EnCoding
+\definesystemvariable {el} % Elements
+\definesystemvariable {en} % ENvironments
+\definesystemvariable {ep} % ExternfiguurPreset
+\definesystemvariable {eq} % EQalign
+\definesystemvariable {er} % external resources
+\definesystemvariable {ex} % ExterneFiguren
+\definesystemvariable {fa} % font feature
+\definesystemvariable {fc} % FramedContent
+\definesystemvariable {fd} % FielD
+\definesystemvariable {fe} % FoxetExtensions
+\definesystemvariable {ff} % FontFile
+\definesystemvariable {fg} % FiGuurmaten
+\definesystemvariable {fi} % FIle
+\definesystemvariable {fl} % Floats
+\definesystemvariable {fm} % ForMules
+\definesystemvariable {fn} % subformulas
+\definesystemvariable {fo} % xml FO
+\definesystemvariable {fp} % FilegroeP
+\definesystemvariable {fq} % Features
+\definesystemvariable {fr} % ForM
+\definesystemvariable {fs} % FileSynonym
+\definesystemvariable {ft} % FonTs
+\definesystemvariable {fu} % FontSolution
+\definesystemvariable {fv} % FontVariant
+\definesystemvariable {fw} % simpleFonts by Wolfgang
+\definesystemvariable {fx} % FoXet
+\definesystemvariable {gr} % GRid
+\definesystemvariable {ha} % HAng
+\definesystemvariable {hs} % HSpace
+\definesystemvariable {ht} % HiddenText
+\definesystemvariable {ia} % Interactie
+\definesystemvariable {ib} % InteractieBalk
+\definesystemvariable {ic} % ICc profiles
+\definesystemvariable {id} % Index
+\definesystemvariable {ig} % ItemGroup
+\definesystemvariable {ih} % InHoudsopgave
+\definesystemvariable {ii} % stelIndexIn
+\definesystemvariable {il} % stelInvulRegelsin
+\definesystemvariable {im} % InMarge
+\definesystemvariable {in} % INspringen
+\definesystemvariable {ip} % InsertPages
+\definesystemvariable {is} % Items
+\definesystemvariable {it} % stelInTerliniein
+\definesystemvariable {iv} % stelInvulLijnenin
+\definesystemvariable {ka} % KAntlijn
+\definesystemvariable {kd} % KaDerteksten
+\definesystemvariable {kj} % KopJes (floats)
+\definesystemvariable {kk} % Kapitalen
+\definesystemvariable {kl} % KoLommen
+\definesystemvariable {km} % KenMerk
+\definesystemvariable {ko} % KOp(pen)
+\definesystemvariable {kp} % KopPelteken
+\definesystemvariable {kr} % KoRps
+\definesystemvariable {ks} % KolomSpan
+\definesystemvariable {kt} % KonTakten
+\definesystemvariable {kw} % KontaktWaarde
+\definesystemvariable {la} % LAnguage
+\definesystemvariable {lb} % LaBels
+\definesystemvariable {ld} % LegenDa
+\definesystemvariable {le} % LinetablE
+\definesystemvariable {lf} % LocalFigures
+\definesystemvariable {lg} % taal (LanGuage)
+\definesystemvariable {li} % LIjst
+\definesystemvariable {lk} % LinK
+\definesystemvariable {ll} % Layers
+\definesystemvariable {lx} % LayerteXt
+\definesystemvariable {ln} % LijNen
+\definesystemvariable {lo} % LOgos
+\definesystemvariable {lt} % LiTeratuur
+\definesystemvariable {ls} % languageScript
+\definesystemvariable {ly} % LaYout
+\definesystemvariable {ma} % MargeAchtergrond
+\definesystemvariable {mb} % MargeBlokken
+\definesystemvariable {md} % MoDule
+\definesystemvariable {me} % MultilingualElement (tags)
+\definesystemvariable {mg} % Metapost paGe
+\definesystemvariable {mh} % MultilingualHead
+\definesystemvariable {mk} % MarKering
+\definesystemvariable {ml} % MultilingualLabel
+\definesystemvariable {mm} % MultilingualMath
+\definesystemvariable {mt} % inline MaTh
+\definesystemvariable {mo} % Math Options
+\definesystemvariable {mp} % MetaPost
+\definesystemvariable {mx} % MatriX
+\definesystemvariable {ng} % parbuilders
+\definesystemvariable {nh} % new heads (structure)
+\definesystemvariable {nn} % structurenumbering
+\definesystemvariable {nm} % Nummering
+\definesystemvariable {np} % NaastPlaatsen
+\definesystemvariable {nr} % Nummeren
+\definesystemvariable {of} % OFfset
+\definesystemvariable {oi} % OmlijndInstellingen
+\definesystemvariable {ol} % OmLijnd
+\definesystemvariable {od} % Omlijnd Defaults (simple)
+\definesystemvariable {on} % ONderstreep
+\definesystemvariable {oo} % OpsOmmingen
+\definesystemvariable {op} % OPsomming
+\definesystemvariable {or} % OtpfilteR
+\definesystemvariable {os} % OffSet
+\definesystemvariable {ot} % OTpsequence
+\definesystemvariable {ov} % OVerlay
+\definesystemvariable {ox} % OffsetBox
+\definesystemvariable {pa} % PAlet
+\definesystemvariable {pb} % PuBlication
+\definesystemvariable {pc} % PageComment
+\definesystemvariable {pe} % PagEhandler
+\definesystemvariable {pf} % ProFiel
+\definesystemvariable {pg} % KoppelPagina
+\definesystemvariable {ph} % ParagrapH
+\definesystemvariable {pl} % PLaats
+\definesystemvariable {pn} % PaginaNummer
+\definesystemvariable {po} % PrOcessor
+\definesystemvariable {pp} % PaPier
+\definesystemvariable {pr} % PRogrammas
+\definesystemvariable {ps} % PoSitioneren
+\definesystemvariable {pt} % PageshifT
+\definesystemvariable {py} % PropertYs
+\definesystemvariable {pv} % PublicationVariable
+\definesystemvariable {ra} % RAise
+\definesystemvariable {rd} % RenDering
+\definesystemvariable {rf} % ReFereren
+\definesystemvariable {rg} % ReGel
+\definesystemvariable {rl} % ReferentieLijst
+\definesystemvariable {rn} % RegelNummer
+\definesystemvariable {ro} % ROteren
+\definesystemvariable {rr} % linenotes
+\definesystemvariable {rs} % RaSters
+\definesystemvariable {rt} % RoosTers
+\definesystemvariable {rv} % ReserVeerfiguur
+\definesystemvariable {rw} % RenderingWindow
+\definesystemvariable {sa} % ScAle
+\definesystemvariable {sb} % SectieBlok
+\definesystemvariable {sc} % SCherm
+\definesystemvariable {sd} % SounD
+\definesystemvariable {se} % SEctie
+\definesystemvariable {sf} % SpeciFics
+\definesystemvariable {sg} % SpacinG
+\definesystemvariable {sh} % ShapeText
+\definesystemvariable {si} % SplIt
+\definesystemvariable {sk} % SectieKop
+\definesystemvariable {sl} % SmalLer
+\definesystemvariable {sm} % SynonieMen
+\definesystemvariable {sn} % SubNummer
+\definesystemvariable {so} % SOrteren
+\definesystemvariable {sp} % SelecteerPapier
+\definesystemvariable {sr} % SpacehandleR
+\definesystemvariable {ss} % Symbool
+\definesystemvariable {st} % STickers
+\definesystemvariable {su} % SetUp
+\definesystemvariable {sv} % SysteemVariabelen
+\definesystemvariable {sw} % SectionWorld
+\definesystemvariable {sx} % Selector
+\definesystemvariable {sy} % SYnchronisatie
+\definesystemvariable {ta} % TAb
+\definesystemvariable {tb} % TekstBlokken
+\definesystemvariable {td} % TextbackgrounDs
+\definesystemvariable {te} % TEmplate
+\definesystemvariable {tf} % TypeFace
+\definesystemvariable {tg} % Tex paGe
+\definesystemvariable {ti} % TabelInstellingen
+\definesystemvariable {tk} % Teksten
+\definesystemvariable {tl} % TekstLijnen
+\definesystemvariable {tm} % TypesynonyM
+\definesystemvariable {tp} % TyPen
+\definesystemvariable {tx} % TeXtflow
+\definesystemvariable {to} % TOlerance
+\definesystemvariable {tr} % TRacer
+\definesystemvariable {ts} % TypeScript
+\definesystemvariable {tt} % TabulaTe
+\definesystemvariable {ty} % TYpe
+\definesystemvariable {uc} % Unicode
+\definesystemvariable {ui} % UItvoer
+\definesystemvariable {ur} % URl
+\definesystemvariable {up} % Utility Program
+\definesystemvariable {va} % VspAce
+\definesystemvariable {ve} % VErsie
+\definesystemvariable {vn} % VoetNoten
+\definesystemvariable {vs} % VSpacing
+\definesystemvariable {vt} % VerTical
+\definesystemvariable {wr} % WitRuimte
+\definesystemvariable {wl} % WordList
+\definesystemvariable {xf} % XML File
+\definesystemvariable {xl} % lxml (mkiv)
+\definesystemvariable {xm} % xml (mkiv)
+\definesystemvariable {xp} % XML Processing
+\definesystemvariable {xy} % schaal
+\definesystemvariable {za} % ZetspiegelAanpassing
+
+%D Next we define some language independant one letter
+%D variables and keywords.
+
+\defineinterfaceconstant {x} {x} % x offset
+\defineinterfaceconstant {y} {y} % y offset
+\defineinterfaceconstant {w} {w} % width
+\defineinterfaceconstant {h} {h} % height
+\defineinterfaceconstant {s} {s} % size
+\defineinterfaceconstant {t} {t} % title
+\defineinterfaceconstant {c} {c} % creator
+\defineinterfaceconstant {e} {e} % extension
+\defineinterfaceconstant {f} {f} % file
+
+\defineinterfaceconstant {a} {a} % kunnen weg
+\defineinterfaceconstant {b} {b} % kunnen weg
+\defineinterfaceconstant {c} {c} % kunnen weg
+\defineinterfaceconstant {d} {d} % kunnen weg
+\defineinterfaceconstant {e} {e} % kunnen weg
+
+\defineinterfaceconstant {s} {s}
+\defineinterfaceconstant {r} {r}
+\defineinterfaceconstant {g} {g}
+\defineinterfaceconstant {b} {b}
+\defineinterfaceconstant {c} {c}
+\defineinterfaceconstant {m} {m}
+\defineinterfaceconstant {y} {y}
+\defineinterfaceconstant {k} {k}
+\defineinterfaceconstant {a} {a} % alternative
+\defineinterfaceconstant {t} {t} % transparency
+\defineinterfaceconstant {p} {p} % percentage
+
+\defineinterfaceconstant {t} {t}
+\defineinterfaceconstant {h} {h}
+\defineinterfaceconstant {b} {b}
+
+\defineinterfaceconstant {rgb} {rgb}
+\defineinterfacevariable {rgb} {rgb}
+
+\defineinterfaceconstant {cmyk} {cmyk}
+\defineinterfacevariable {cmyk} {cmyk}
+
+\defineinterfaceconstant {mp} {mp}
+\defineinterfacevariable {mp} {mp}
+
+\defineinterfacevariable {s} {s}
+
+\defineinterfacevariable {a} {a}
+\defineinterfacevariable {b} {b}
+\defineinterfacevariable {c} {c}
+\defineinterfacevariable {d} {d}
+
+%D Special purpose variables:
+
+\def\v!oddeven#1{\ifodd#1\v!odd\else\v!even\fi}
+
+%D The names of files and their extensions are fixed.
+%D \CONTEXT\ uses as less files as possible. Utility files can
+%D be recognized by the first two characters of the extension:
+%D \type{tu}.
+
+\definefileconstant {utilityfilename} {texutil}
+
+\definefileconstant {blockextension} {tub}
+\definefileconstant {figureextension} {tuf}
+\definefileconstant {inputextension} {tui}
+\definefileconstant {outputextension} {tuo} % tup for previous run
+\definefileconstant {optionextension} {top}
+\definefileconstant {temporaryextension} {tmp}
+\definefileconstant {patternsextension} {pat}
+\definefileconstant {hyphensextension} {hyp}
+\definefileconstant {fontmapextension} {map}
+\definefileconstant {bibextension} {bbl}
+
+%D These files are loaded at start||up. They may contain system
+%D specific setups (or calls to other files), old macro's, to
+%D garantee compatibility and new macro's noy yet present in
+%D the format.
+
+\definefileconstant {errfilename} {cont-err}
+\definefileconstant {sysfilename} {cont-sys}
+\definefileconstant {newfilename} {cont-new}
+\definefileconstant {locfilename} {cont-loc}
+\definefileconstant {expfilename} {cont-exp}
+%definefileconstant {usrfilename} {cont-usr} % .tex
+%definefileconstant {fmtfilename} {cont-fmt} % .tex
+
+%D Handy for typescripts (we could use s! instead:
+
+\definetypescriptconstant {name} {name}
+\definetypescriptconstant {default} {default}
+\definetypescriptconstant {map} {map}
+\definetypescriptconstant {special} {special}
+\definetypescriptconstant {size} {size}
+
+%D The setup files for the language, font, color and special
+%D subsystems have a common prefix. This means that we have at
+%D most three characters for unique filenames.
+
+\definefileconstant {colorprefix} {colo-}
+\definefileconstant {encodingprefix} {enco-}
+\definefileconstant {filterprefix} {filt-}
+\definefileconstant {fontprefix} {font-}
+\definefileconstant {handlingprefix} {hand-}
+\definefileconstant {javascriptprefix} {java-}
+\definefileconstant {languageprefix} {lang-}
+\definefileconstant {mathprefix} {math-}
+\definefileconstant {metapostprefix} {meta-}
+\definefileconstant {regimeprefix} {regi-}
+\definefileconstant {specialprefix} {spec-}
+\definefileconstant {symbolprefix} {symb-}
+\definefileconstant {typeprefix} {type-}
+\definefileconstant {xtagprefix} {xtag-}
+\definefileconstant {propprefix} {prop-}
+\definefileconstant {unicprefix} {unic-}
+\definefileconstant {sortprefix} {sort-}
+\definefileconstant {prettyprefix} {pret-}
+
+\definefileconstant {moduleprefix} {m-}
+\definefileconstant {styleprefix} {s-}
+\definefileconstant {xstyleprefix} {x-}
+\definefileconstant {privateprefix} {p-}
+\definefileconstant {thirdprefix} {t-}
+
+%definefileconstant {beforeprefix} {b-}
+%definefileconstant {afterprefix} {a-}
+
+%D \CONTEXT\ follows different strategies for finding files.
+%D The macros that are responsible for this 'clever' searching
+%D make use of two (very important) path specifiers.
+
+\definefileconstant {pathseparator} {/}
+\definefileconstant {currentpath} {.}
+\definefileconstant {parentpath} {..}
+
+%D The way fonts are defined and called upon is language
+%D independant. We follow the scheme laid down by Knuth in
+%D Plain \TEX. We'll explain their meaning later.
+
+\defineinterfaceconstant {tf} {tf}
+\defineinterfaceconstant {bf} {bf}
+\defineinterfaceconstant {bs} {bs}
+\defineinterfaceconstant {bi} {bi}
+\defineinterfaceconstant {sl} {sl}
+\defineinterfaceconstant {it} {it}
+\defineinterfaceconstant {sc} {sc}
+\defineinterfaceconstant {rm} {rm}
+\defineinterfaceconstant {ss} {ss}
+\defineinterfaceconstant {tt} {tt}
+\defineinterfaceconstant {hw} {hw}
+\defineinterfaceconstant {cg} {cg}
+\defineinterfaceconstant {os} {os}
+\defineinterfaceconstant {mm} {mm}
+\defineinterfaceconstant {i} {i}
+\defineinterfaceconstant {nn} {nn}
+
+\defineinterfaceconstant {x} {x}
+\defineinterfaceconstant {xx} {xx}
+
+\defineinterfaceconstant {em} {em}
+
+\defineinterfaceconstant {mi} {mi}
+\defineinterfaceconstant {sy} {sy}
+\defineinterfaceconstant {ex} {ex}
+\defineinterfaceconstant {mr} {mr}
+
+\defineinterfaceconstant {ma} {ma}
+\defineinterfaceconstant {mb} {mb}
+\defineinterfaceconstant {mc} {mc}
+
+%D For figure inclusion we need:
+
+\defineinterfaceconstant {tif} {tif}
+\defineinterfaceconstant {eps} {eps}
+\defineinterfaceconstant {mps} {mps}
+\defineinterfaceconstant {jpg} {jpg}
+\defineinterfaceconstant {pdf} {pdf}
+\defineinterfaceconstant {png} {png}
+\defineinterfaceconstant {avi} {avi}
+\defineinterfaceconstant {mov} {mov}
+\defineinterfaceconstant {svg} {svg}
+\defineinterfaceconstant {tex} {tex}
+\defineinterfaceconstant {tmp} {tmp}
+\defineinterfaceconstant {cld} {cld}
+
+%D A careful reader will have noticed that in the module
+%D \type{mult-ini} we defined \type{\selectinterface}. We were
+%D not yet able to actually select an interface, because we
+%D still had to define the constants and variables. Now we've
+%D done so, selection is permitted.
+
+\selectinterface
+
+%D Ok, here are some more, because we've got ouselves some
+%D extensions to \CONTEXT.
+
+\definemessageconstant {addresses}
+\definemessageconstant {documents}
+
+\protect
+
+\endinput
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 11:38:14 +0000