Consistency: "{\bf ...}" ==> "\strong{...}"
"{\em ...}" ==> "\emph{...}"
Not at all sure what to do with "{\rm ...}".
Leaving it for now.
diff --git a/Doc/libstrio.tex b/Doc/libstrio.tex
index 1241e18..26fdda1 100644
--- a/Doc/libstrio.tex
+++ b/Doc/libstrio.tex
@@ -4,7 +4,7 @@
\stmodindex{StringIO}
This module implements a file-like class, \code{StringIO},
-that reads and writes a string buffer (also known as {\em memory
+that reads and writes a string buffer (also known as \emph{memory
files}). See the description on file objects for operations.
When a \code{StringIO} object is created, it can be initialized