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authorHans Hagen <pragma@wxs.nl>2018-02-12 10:25:10 +0100
committerContext Git Mirror Bot <phg42.2a@gmail.com>2018-02-12 10:25:10 +0100
commite005748401471273a119724acf5e1567f2a04eee (patch)
treefaa325320cbce7a475dd19050e9dcb79c8c71d4f /doc/context/sources/general/fonts/fonts/fonts-extensions.tex
parentf4c9d2d305f1214a144fcb23a66964761583234a (diff)
downloadcontext-e005748401471273a119724acf5e1567f2a04eee.tar.gz
2018-02-12 09:01:00
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diff --git a/doc/context/sources/general/fonts/fonts/fonts-extensions.tex b/doc/context/sources/general/fonts/fonts/fonts-extensions.tex
index 26b3d5f2d..5800f2c57 100644
--- a/doc/context/sources/general/fonts/fonts/fonts-extensions.tex
+++ b/doc/context/sources/general/fonts/fonts/fonts-extensions.tex
@@ -797,6 +797,23 @@ We use the following example. The results are shown in \in {figure}
\getbuffer [example]
\stopplacefigure
+You can see what happens in \in {figure} [expansion:visualized].
+
+\startbuffer[example]
+ \setupalign[hz]
+ \enabletrackers[*expansion*]
+ \definefontfeature[boundingbox][boundingbox={frame,empty}]
+ \definedfont[Serif*default,quality,boundingbox @ 12.1pt]
+ \samplefile{sapolsky}\par
+ \disabletrackers[*expansion*]
+\stopbuffer
+
+\typebuffer[example]
+
+\startplacefigure[reference=expansion:visualized,title=The injected expansion kerns.]
+ \getbuffer [example]
+\stopplacefigure
+
\startsubsubject[title=Expansion and kerning]
When we expand glyphs we also need to look at the font kerns between them. In the