Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/mac/libmac.tex b/Doc/mac/libmac.tex
index 987f290..54049a2 100644
--- a/Doc/mac/libmac.tex
+++ b/Doc/mac/libmac.tex
@@ -89,7 +89,7 @@
\end{description}
-\section{Built-in Module \sectcode{mac}}
+\section{Built-in Module \module{mac}}
\label{module-mac}
\bimodindex{mac}
@@ -126,7 +126,7 @@
values appended: the size of the resource fork of the file and its
4-char creator and type.
-\section{Standard Module \sectcode{macpath}}
+\section{Standard Module \module{macpath}}
\label{module-macpath}
\stmodindex{macpath}