lots of markup nits, most commonly Unix/unix --> \UNIX
diff --git a/Doc/lib/libsubprocess.tex b/Doc/lib/libsubprocess.tex
index 9ea44dc..03072f7 100644
--- a/Doc/lib/libsubprocess.tex
+++ b/Doc/lib/libsubprocess.tex
@@ -107,7 +107,7 @@
If \var{universal_newlines} is \constant{True}, the file objects stdout
and stderr are opened as text files, but lines may be terminated by
-any of \code{'\e n'}, the Unix end-of-line convention, \code{'\e r'},
+any of \code{'\e n'}, the \UNIX{} end-of-line convention, \code{'\e r'},
the Macintosh convention or \code{'\e r\e n'}, the Windows convention.
All of these external representations are seen as \code{'\e n'} by the
Python program. \note{This feature is only available if Python is built