diff options
Diffstat (limited to 'doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex b/doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex index 6eef0dd01..0ea92f150 100644 --- a/doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex +++ b/doc/context/sources/general/manuals/lowlevel/lowlevel-marks.tex @@ -1,14 +1,12 @@ % language=us runpath=texruns:manuals/lowlevel -\startcomponent lowlevel-marks - \environment lowlevel-style \startdocument [title=marks, color=middlemagenta] -\startsection[title=Introduction] +\startsectionlevel[title=Introduction] Marks are one of the subsystems of \TEX, as are for instance alignments and math as well as inserts which they share some properties with. Both inserts and marks @@ -50,9 +48,9 @@ In this document we discuss marks but assume that \LUAMETATEX\ is used with a few \LUA\ mechanisms, but it is to be seen if that will be either a replacement or an alternative. -\stopsection +\stopsectionlevel -\startsection[title=The basics] +\startsectionlevel[title=The basics] Although the original \TEX\ primitives are there, the plural \ETEX\ mark commands are to be used. Marks, signals with token lists, are set with: @@ -117,9 +115,9 @@ The current, latest assigned, value of a mark is available too: Using this value in for instance headers and footers makes no sense because the last node set can be on a following page. -\stopsection +\stopsectionlevel -\startsection[title=Migration] +\startsectionlevel[title=Migration] In the introduction we mentioned that \LUAMETATEX\ has migration built in. In \MKIV\ we have this as option too, but there it is delegated to \LUA. It permits @@ -306,9 +304,9 @@ Here \type {sm} means \quote {set mark} while \type {rm} would indicate a \quote the box and thereby have become a a specific box property as can be seen in the above trace. -\stopsection +\stopsectionlevel -\startsection[title=Tracing] +\startsectionlevel[title=Tracing] The \LUAMETATEX\ engine has a dedicated tracing option for marks. The fact that the traditional engine doesn't have this can be seen as indication that this is @@ -355,9 +353,9 @@ When tracing is set to 2 you also get details we get a list of marks of the anal 1:9: ..bot {sample 9.1} \stoptyping -\stopsection +\stopsectionlevel -\startsection[title=High level commands] +\startsectionlevel[title=High level commands] I think that not that many users define their own marks. They are useful for showing section related titles in headers and footers but the implementation of @@ -493,14 +491,21 @@ The following three variants are (what is called) fully expandable: % \resetsynchronizemarking[#1]% % \synchronizemarking[#1][#2][#3]% (#3: options (no longer used)) -\stopsection +\stopsectionlevel -\startsection[title=Pitfalls] +\startsectionlevel[title=Pitfalls] The main pitfall is that a (re)setting a mark will inject a node which in vertical mode can interfere with spacing. In for instance section commands we wrap them with the title so there it should work out okay. -\stopsection +\stopsectionlevel \stopdocument + +% Musical timestamp: videos showing up on YT with Nandi Bushell performing with +% Dave Grohl (e.g. https://www.youtube.com/watch?v=_AVkGj41RuA) ... the highlight +% of a nice and emotional thread of exchange between a young and capable energetic +% drummer challenging an experienced musician. During the pandemic one could +% witness quite some interesting musical experiments and Nandi and Yoyoka are some +% inspiring discoveries. |