Minor markup adjustments.

diff --git a/Doc/lib/libos.tex b/Doc/lib/libos.tex
index fa9f0f3866092ebf26cecfb1e0c35c3a6d83962f..bc935b234b66e7931e7607a6fde64805513a7269 100644 (file)
--- a/Doc/lib/libos.tex
+++ b/Doc/lib/libos.tex
@@ -300,8 +300,8 @@ function.
 Availability: Macintosh, \UNIX, Windows.
 
 \versionchanged[When specified, the \var{mode} argument must now start
-  with one of the letters \code{'r'}, \code{'w'}, or \code{'a'},
-  otherwise a \exception{ValueError} is raised. ]{2.3}
+  with one of the letters \character{r}, \character{w}, or \character{a},
+  otherwise a \exception{ValueError} is raised]{2.3}
 \end{funcdesc}
 
 \begin{funcdesc}{popen}{command\optional{, mode\optional{, bufsize}}}