Example process flow?

[Alan Batie]

I was wondering if there was an example of typical radius process flow
and interactions with the config file and modules anywhere?  That is:

Connection setup:
   Access-Request processed through in this way (generating either
Access-Accept or Access-Reject when this or that happens)

Accounting records
  Accounting-Start
  Interim-Update
  Accounting-Stop

etc

It is just not clear to me what happens when...

Thanks...