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-rw-r--r--macros/optex/base/alloc.opm13
1 files changed, 6 insertions, 7 deletions
diff --git a/macros/optex/base/alloc.opm b/macros/optex/base/alloc.opm
index fae88d286e..180adddeff 100644
--- a/macros/optex/base/alloc.opm
+++ b/macros/optex/base/alloc.opm
@@ -120,19 +120,18 @@
\_newdimen \tmpdim \_newdimen \_tmpdim
\_doc -----------------------------
- A few registers are initialized like in plain\TeX/. We absolutely
+ A few registers: \`\maxdimen`, \`\hideskip` and
+ \`\centering` are initialized like in plain\TeX/. We absolutely
don't support the `@`category dance, so `\z@skip`
- `\z@`, `\p@` etc. are defined but not recommended in \OpTeX/.
-
- The \`\_zo` and \`\_zoskip` (equivalents to `\z@` and `\z@skip`)
- are declared here and used in some internal macros of \OpTeX/
- for improving speed.
+ `\z@`, `\p@` etc. are defined but not recommended.
+ The \`\_zo`, \`\_zoskip` and \`\voidbox` (equivalents to
+ `\z@`, `\z@skip` and `\voidb@x`) are preferred in \OpTeX.
\_cod -----------------------------
\_newdimen\_maxdimen \_maxdimen=16383.99999pt % the largest legal <dimen>
-\_newdimen\_zo \_zo=0pt
\_newskip\_hideskip \_hideskip=-1000pt plus 1fill % negative but can grow
\_newskip\_centering \_centering=0pt plus 1000pt minus 1000pt
+\_newdimen\_zo \_zo=0pt
\_newskip\_zoskip \_zoskip=0pt plus0pt minus0pt
\_newbox\_voidbox % permanently void box register