Consistency: "{\bf ...}" ==> "\strong{...}"
"{\em ...}" ==> "\emph{...}"
Not at all sure what to do with "{\rm ...}".
Leaving it for now.
diff --git a/Doc/ext.tex b/Doc/ext.tex
index 911b824..71343a5 100644
--- a/Doc/ext.tex
+++ b/Doc/ext.tex
@@ -1303,9 +1303,10 @@
\subsection{Shared Libraries}
-You must link the \samp{.o} file to produce a shared library. This is
-done using a special invocation of the \UNIX{} loader/linker, {\em
-ld}(1). Unfortunately the invocation differs slightly per system.
+You must link the \file{.o} file to produce a shared library. This is
+done using a special invocation of the \UNIX{} loader/linker,
+\emph{ld}(1). Unfortunately the invocation differs slightly per
+system.
On SunOS 4, use
\bcode\begin{verbatim}
@@ -1336,7 +1337,7 @@
\subsection{SGI IRIX 4 Dynamic Loading}
-{\bf IMPORTANT:} You must compile your extension module with the
+\strong{IMPORTANT:} You must compile your extension module with the
additional \C{} flag \samp{-G0} (or \samp{-G 0}). This instruct the
assembler to generate position-independent code.