[Question] Vbulletin terminologies and Acronyms

[Come2Daddy]

Hello there,

Actually I'm trying to get started writting my own hacks and mods, but as you know times is tough , I found some special vbulletin conventions which I'm trying to familiarize, however I found some acronyms and terminology that I think the stuation would be much easier if I know those terminologies, and acronyms meanings such as:

CSRF in define('CSRF_PROTECTION', true);,

bf_ugp in bf_ugp_genericoptions,

GPC in $vbulletin->GPC['xxx'],

or bit such as in postbit, or reputationbits, .... etc.

of course I found its meaning in the dectionary, but I couldn't have any clue about what does it mean in the vb templates.

waiting your help, and thanx in advanced