Fixup hook.

["Atul Kulkarni (SIGSEC)" <At...@symantec.com>]

Hi All, 
 
I am trying to write a fixup hook for our Apache module. I intend to
bloat up the environment variables for CGI and SSI with the values. I
wanted to know, will just registering the hook and then implementing the
function modName_hook_Fixup(request_rec* rec) suffice or I need to do
something else?
 
In general I had another query How is this hook invoked? I mean what
event trigger's this hook? 
 
Any pointers to reading material on this would be helpful. 
 
Thanks and Regards,
Atul.