Remove obsolete lines like this:

\setindexsubitem{(in module frobnitz)}

These are no longer needed when present before any other \setindexsubitem{}
in the module section.  The indexsubitem is now set by \bimodindex and
\stmodindex.

Doc/lib/libpanel.tex

@@ -15,7 +15,6 @@ to interface with the
 The module is too large to document here in its entirety.
 One interesting function:
 
-\setindexsubitem{(in module panel)}
 \begin{funcdesc}{defpanellist}{filename}
 Parses a panel description file containing S-expressions written by the
 \emph{Panel Editor}