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/libfm.tex b/Doc/lib/libfm.tex
index fa469fc..9d22123 100644
--- a/Doc/lib/libfm.tex
+++ b/Doc/lib/libfm.tex
@@ -14,7 +14,7 @@
 
 It supports the following operations:
 
-\renewcommand{\indexsubitem}{(in module fm)}
+\setindexsubitem{(in module fm)}
 \begin{funcdesc}{init}{}
 Initialization function.
 Calls \code{fminit()}.
@@ -50,7 +50,7 @@
 
 Font handle objects support the following operations:
 
-\renewcommand{\indexsubitem}{(font handle method)}
+\setindexsubitem{(font handle method)}
 \begin{funcdesc}{scalefont}{factor}
 Returns a handle for a scaled version of this font.
 Calls \code{fmscalefont(\var{fh}, \var{factor})}.