Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/lib/libshelve.tex b/Doc/lib/libshelve.tex
index 4349534..90afbc6 100644
--- a/Doc/lib/libshelve.tex
+++ b/Doc/lib/libshelve.tex
@@ -1,4 +1,4 @@
-\section{Standard Module \sectcode{shelve}}
+\section{Standard Module \module{shelve}}
 \label{module-shelve}
 \stmodindex{shelve}