Where can I find definitions of the methods in a process

I need to fine-tune some security, and was wondering where I can find explanations of the methods in a process.
As an example, what exactly do "AdjustQuotes" or "GetCustomer" in bo.Customer do and/or not do?
They sound semi-obvious, but rather than play with this for hours, is there some better documentation?

The help files and Tools User Guide cover things in the most superficial way.


Tony Hughes