Quoting from c.l.p thread Python Docs Bug:
"One long-standing irritation I have with the table 
of contents for the Python Library Reference 
<http://docs.python.org/lib/lib.html>, is that 
there is one very important section, "String Methods" 
<http://docs.python.org/lib/string-methods.html>, 
which does not appear there. That's because it is 
section 2.3.6.1, and the table of contents 
only goes to 3 levels."

I am third to agree.  To not change rule, perhaps 
this section could be lifted to third level.  It 
really is one that people need to refer back to.