Docs on 'debug.traceback'

["Renato Maia" <maia@...>]

Hi all.

Why the feature about tracing back a coroutine with 'debug.traceback'
is not present in the docs? Is it an undocumented feature like
'newproxy' or just missed?

Thanks in advance.

Renato Maia.

P.S.: Does anyone bothers to answer me if there is a complete list of
all new features of Lua 5.1?