From 3c25716e01b7251f0f7504481692421a729e4b53 Mon Sep 17 00:00:00 2001
From: Hans Hagen <pragma@wxs.nl>
Date: Sun, 19 Apr 2020 20:29:51 +0200
Subject: 2020-04-19 19:24:00

---
 .../general/manuals/luametatex/luametatex-enhancements.tex   | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'doc/context/sources/general/manuals/luametatex/luametatex-enhancements.tex')

diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-enhancements.tex b/doc/context/sources/general/manuals/luametatex/luametatex-enhancements.tex
index f295b3464..cc3788ee9 100644
--- a/doc/context/sources/general/manuals/luametatex/luametatex-enhancements.tex
+++ b/doc/context/sources/general/manuals/luametatex/luametatex-enhancements.tex
@@ -320,6 +320,7 @@ experimental.
 
 \topicindex {attributes}
 \topicindex {boxes}
+\topicindex {vcentering}
 
 Nodes typically receive the list of attributes that is in effect when they are
 created. This moment can be quite asynchronous. For example: in paragraph
@@ -343,7 +344,7 @@ already boxed material will have no effect. Keep in mind that this
 incompatibility is mostly due to the fact that separate specials and literals are
 a more unnatural approach to colors than attributes.
 
-It is possible to fine-tune the list of attributes that are applied to a \type
+It is possible to fine|-|tune the list of attributes that are applied to a \type
 {hbox}, \type {vbox} or \type {vtop} by the use of the keyword \type {attr}. The
 \type {attr} keyword(s) should come before a \type {to} or \type {spread}, if
 that is also specified. An example is:
@@ -392,6 +393,13 @@ indexing the node (here we do that with \type {[a]}). Running this snippet gives
 Because some values are not set we need to apply the \type {tostring} function
 here so that we get the word \type {nil}.
 
+A special kind of box is \prm {vcenter}. This one also can have attributes. When
+one or more are set these plus the currently set attributes are bound to the
+resulting box. In regular \TEX\ these centered boxes are only permitted in math
+mode, but in \LUAMETATEX\ there is no error message and the box the height and
+depth are equally divided. Of course in text mode there is no math axis related
+offset applied.
+
 \stopsubsection
 
 \stopsection
@@ -1651,7 +1659,7 @@ difference. Watch your spaces.
 
 \stopsubsection
 
-\startsubsection[title={Controling parshapes with \lpr {shapemode}}]
+\startsubsection[title={Controlling parshapes with \lpr {shapemode}}]
 
 Another adaptation to the \ALEPH\ directional model is control over shapes driven
 by \prm {hangindent} and \prm {parshape}. This is controlled by a new parameter
-- 
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