where is a faq/info on alerts

["Turnquist,Wayne" <WayneTurnquist () catholichealth net>]

where do i find info on alert that shows up in the log
 
snort [xx:yy:ww] 
 
can someone point me to a faq on the numbering scheme of these alerts
 
i need a good starting point so i can understand/search for these alerts
 
 
thanks
wt