List of Functions

I have no idea if this is the correct list to use.

How do you obtain a list of the functions and their argument lists that have
been created on a Postgres database?

I have tried searching various lists and archives plus the documentation.
All I want to find is a list of:-

Function name return value arguments.

After you run the "create or replace" script, this data has to be saved
somewhere. Just the name of the table would do.

Thanks,
Robert Stone

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