Yes, that is what I was looking for. It seems a strange place for the information. Could this be cross-referenced from the Library Reference? I never even thought to look for it in the Language Ref. Other list operations are documented in 
http://docs.python.org/lib/typesseq.html
and this page discusses comparison of library types in general:
http://docs.python.org/lib/comparisons.html

I think it would be worth either repeating or linking to the information from the language ref on either of these pages.

Thanks,
Kent