Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/lib/libni.tex b/Doc/lib/libni.tex
index 8a251da..14ff395 100644
--- a/Doc/lib/libni.tex
+++ b/Doc/lib/libni.tex
@@ -1,4 +1,4 @@
-\section{Standard Module \sectcode{ni}}
+\section{Standard Module \module{ni}}
 \label{module-ni}
 \stmodindex{ni}