Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/lib/libsoundex.tex b/Doc/lib/libsoundex.tex
index 5ea1ad3..7d483ed 100644
--- a/Doc/lib/libsoundex.tex
+++ b/Doc/lib/libsoundex.tex
@@ -1,4 +1,4 @@
-\section{Built-in Module \sectcode{soundex}}
+\section{Built-in Module \module{soundex}}
 \label{module-soundex}
 \bimodindex{soundex}