Обсуждение: detailed docs for functions

Ok, forgive the seemingly-stupid question, but I can't find the docs for the
built-in functions anywhere.

There's the pages at
http://postgresql.readysetnet.com/users-lounge/docs/7.0/postgres/functions28
76.htm, but they don't go into detail beyond what I see there.

Where the heck are the detailed docs (ideally, with some example code) for
pgsql?

thanks,
Eric

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