lots of markup nits, most commonly Unix/unix --> \UNIX
diff --git a/Doc/mac/libmacos.tex b/Doc/mac/libmacos.tex
index b22b39c..e50b99b 100644
--- a/Doc/mac/libmacos.tex
+++ b/Doc/mac/libmacos.tex
@@ -25,7 +25,7 @@
incompatible between linking models, packages could use this information to give
more decent error messages. The value is one of \code{'static'} for a
statically linked Python, \code{'framework'} for Python in a Mac OS X framework,
-\code{'shared'} for Python in a standard unix shared library.
+\code{'shared'} for Python in a standard \UNIX{} shared library.
Older Pythons could also have the value
\code{'cfm'} for Mac OS 9-compatible Python.
\end{datadesc}