[erlang-questions] further documentation for -spec directive?

[Simon St.Laurent]

Is there more comprehensive (ideally tutorial) documentation for the 
-spec directive than is available from:

<http://www.erlang.org/doc/reference_manual/typespec.html>

The examples there are minimal, and don't show, for example, results in 
EDoc or other environments that rely on this information.

If there isn't, I'll probably end up writing it, but I'd be happier if 
someone else has already done it.

-- 
Simon St.Laurent
http://simonstl.com/