diff options
Diffstat (limited to 'doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex b/doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex index f24019f0d..4dbee67cd 100644 --- a/doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex +++ b/doc/context/sources/general/manuals/lowlevel/lowlevel-registers.tex @@ -6,7 +6,7 @@ [title=registers, color=darkmagenta] -\startsection[title=Preamble] +\startsectionlevel[title=Preamble] Registers are sets of variables that are accessed by index and a such resemble registers in a processing unit. You can store a quantity in a register, retrieve @@ -14,9 +14,9 @@ it, and also manipulate it. There is hardly any need to use them in \CONTEXT\ so we keep it simple. -\stopsection +\stopsectionlevel -\startsection[title={\TEX\ primitives}] +\startsectionlevel[title={\TEX\ primitives}] There are several categories: @@ -105,9 +105,11 @@ but in a macro package you should not use that one but the higher level \type Watch the difference: +\pushoverloadmode \startlines\tt \getbuffer[1,2] \stoplines +\popoverloadmode The first definition uses a yet free register so you won't get a clash. The second one is just a shortcut using a macro and the third one too but again @@ -182,9 +184,9 @@ If you want to know more about all these quantities, \quotation {\TEX\ By Topic} provides a good summary of what \TEX\ has to offer, and there is no need to repeat it here. -\stopsection +\stopsectionlevel -\startsection[title={\ETEX\ primitives}] +\startsectionlevel[title={\ETEX\ primitives}] Apart from the ability to use expressions, the contribution to registers that \ETEX\ brought was that suddenly we could use upto 65K of them, which is more @@ -194,9 +196,9 @@ and later \LUATEX\ regular arrays were used, at the cost of more memory which in the meantime has become cheap. As \CONTEXT\ moved to \ETEX\ rather early its users never had to worry about it. -\stopsection +\stopsectionlevel -\startsection[title={\LUATEX\ primitives}] +\startsectionlevel[title={\LUATEX\ primitives}] The \LUATEX\ engine introduced attributes. These are numeric properties that are bound to the nodes that are the result of typesetting operations. They are @@ -239,13 +241,13 @@ Just be aware that defining attributes can have an impact on performance. As you cannot access them at the \TEX\ end you seldom need them. If you do you can better use the proper more high level definers (not discussed here). -\stopsection +\stopsectionlevel -\startsection[title={\LUAMETATEX\ primitives}] +\startsectionlevel[title={\LUAMETATEX\ primitives}] {\em todo} -\stopsection +\stopsectionlevel \stopdocument |