Reduce the number of levels in the Table of Contents by one, mostly for the

Python Library Reference.  The other manuals do not suffer.

This does not affect HOWTO documents.

Doc/texinputs/manual.cls

@@ -132,6 +132,7 @@
 %
 \renewcommand*\l@section{\@dottedtocline{1}{1.5em}{2.6em}}
 \renewcommand*\l@subsection{\@dottedtocline{2}{4.1em}{3.5em}}
+\setcounter{tocdepth}{1}
 
 
 % Fix the theindex environment to add an entry to the Table of