Work around a small (& annoying) limitation of the latex2html support for
\seemodule.  This is far easier than figuring out the real problem, but it
works.
diff --git a/Doc/lib/libparser.tex b/Doc/lib/libparser.tex
index c4d2a6a..434786b 100644
--- a/Doc/lib/libparser.tex
+++ b/Doc/lib/libparser.tex
@@ -691,11 +691,10 @@
 
 \begin{seealso}
 
-\seemodule{symbol}
-  {useful constants representing internal nodes of the parse tree}
+\seemodule{symbol}{useful constants representing internal nodes of the
+parse tree}
 
-\seemodule{token}
-  {useful constants representing leaf nodes of the parse tree and
-   functions for testing node values}
+\seemodule{token}{useful constants representing leaf nodes of the
+parse tree and functions for testing node values}
 
 \end{seealso}