(libhtmllib.tex, libsgmllib.tex, libformatter.tex):
Improve indexing somewhat. Add small intros to the "implementations"
sections of the formatter module doc.
diff --git a/Doc/lib/libhtmllib.tex b/Doc/lib/libhtmllib.tex
index cc9599d..bf57ea9 100644
--- a/Doc/lib/libhtmllib.tex
+++ b/Doc/lib/libhtmllib.tex
@@ -69,6 +69,8 @@
In addition to tag methods, the \code{HTMLParser} class provides some
additional methods and instance variables for use within tag methods.
+\renewcommand{\indexsubitem}{({\tt HTMLParser} method)}
+
\begin{datadesc}{formatter}
This is the formatter instance associated with the parser.
\end{datadesc}