Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/mac/libmacfs.tex b/Doc/mac/libmacfs.tex
index 6bb4bbf..24e08ab 100644
--- a/Doc/mac/libmacfs.tex
+++ b/Doc/mac/libmacfs.tex
@@ -1,4 +1,4 @@
-\section{Built-in Module \sectcode{macfs}}
+\section{Built-in Module \module{macfs}}
 \label{module-macfs}
 \bimodindex{macfs}