Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/lib/libxdrlib.tex b/Doc/lib/libxdrlib.tex
index d831682..cea50e0 100644
--- a/Doc/lib/libxdrlib.tex
+++ b/Doc/lib/libxdrlib.tex
@@ -1,4 +1,4 @@
-\section{Standard Module \sectcode{xdrlib}}
+\section{Standard Module \module{xdrlib}}
 \label{module-xdrlib}
 \stmodindex{xdrlib}
 \index{XDR}