Remove all \bcode / \ecode cruft; this is no longer needed. See previous
checkin of myformat.sty.
Change "\renewcommand{\indexsubitem}{(...)}" to "\setindexsubitem{(...)}"
everywhere.
Some other minor nits that I happened to come across.
diff --git a/Doc/lib/libgrp.tex b/Doc/lib/libgrp.tex
index ab90485..478097d 100644
--- a/Doc/lib/libgrp.tex
+++ b/Doc/lib/libgrp.tex
@@ -19,7 +19,7 @@
It defines the following items:
-\renewcommand{\indexsubitem}{(in module grp)}
+\setindexsubitem{(in module grp)}
\begin{funcdesc}{getgrgid}{gid}
Return the group database entry for the given numeric group ID.
\end{funcdesc}