diff options
Diffstat (limited to 'doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex b/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex index 8fbd796b4..d5105fc8c 100644 --- a/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex +++ b/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex @@ -9,7 +9,7 @@ [title=boxes, color=middlered] -\startsection[title=Introduction] +\startsectionlevel[title=Introduction] An average \CONTEXT\ user will not use the low level box primitives but a basic understanding of how \TEX\ works doesn't hurt. In fact, occasionally using a box @@ -23,9 +23,9 @@ about all kind of glues, kerns and penalties, just boxes it is. This explanation will be extended when I feel the need (or users have questions that can be answered here). -\stopsection +\stopsectionlevel -\startsection[title=Boxes] +\startsectionlevel[title=Boxes] This paragraph of text is made from lines that contain words that themselves contain symbolic representations of characters. Each line is wrapped in a so @@ -66,11 +66,9 @@ other hand wraps a linked list of so called nodes: glyphs, kerns, glue, penalties, rules, boxes, etc. It is a container with properties like width, height, depth and shift. -\stopsection +\stopsectionlevel -\stopsection - -\startsection[title={\TEX\ primitives}] +\startsectionlevel[title={\TEX\ primitives}] The box model is reflected in \TEX's user interface but not by that many commands, most noticeably \type {\hbox}, \type {\vbox} and \type {\vtop}. Here is @@ -218,9 +216,9 @@ we use copy because it serves the examples. \box \scratchbox \stoptyping -\stopsection +\stopsectionlevel -\startsection[title={\ETEX\ primitives}] +\startsectionlevel[title={\ETEX\ primitives}] The \ETEX\ extensions don't add something relevant for boxes, apart from that you can use the expressions mechanism to mess around with their dimensions. There is @@ -229,9 +227,9 @@ capabilities and doesn't change much as it's mostly a way to trick the backend into outputting a stretch of text in the other direction. This feature is not available in \LUATEX\ because it has an alternative direction mechanism. -\stopsection +\stopsectionlevel -\startsection[title={\LUATEX\ primitives}] +\startsectionlevel[title={\LUATEX\ primitives}] The concept of boxes is the same in \LUATEX\ as in its predecessors but there are some aspects to keep in mind. When a box is typeset this happens in \LUATEX: @@ -289,9 +287,9 @@ but because in \LUAMETATEX\ there are only two. Because this model has been upgr it will be discusses in the next section. A \CONTEXT\ user is supposed to use the official \CONTEXT\ interfaces in order to be downward compatible. -\stopsection +\stopsectionlevel -\startsection[title={\LUAMETATEX\ primitives}] +\startsectionlevel[title={\LUAMETATEX\ primitives}] There are two possible directions: left to right (the default) and right to left for Hebrew and Arabic. Here is an example that shows how it'd done with low level @@ -691,7 +689,7 @@ test\quad \ruledhbox{\getbuffer} \stoplinecorrection -\stopsection +\stopsectionlevel \stopdocument |