Consistency: "{\bf ...}" ==> "\strong{...}"
"{\em ...}" ==> "\emph{...}"
Not at all sure what to do with "{\rm ...}".
Leaving it for now.
diff --git a/Doc/lib/libmarshal.tex b/Doc/lib/libmarshal.tex
index fa86c03..dc4ed98 100644
--- a/Doc/lib/libmarshal.tex
+++ b/Doc/lib/libmarshal.tex
@@ -34,7 +34,7 @@
supported; and recursive lists and dictionaries should not be written
(they will cause infinite loops).
-{\bf Caveat:} On machines where C's \code{long int} type has more than
+\strong{Caveat:} On machines where C's \code{long int} type has more than
32 bits (such as the DEC Alpha), it
is possible to create plain Python integers that are longer than 32
bits. Since the current \code{marshal} module uses 32 bits to