Order on snort rules

["Nadia Guerroumi" <n_guerro () ece concordia ca>]

PLease is there any order on the execution of snort rules.
If for example I put in a file test.rules those two rules:
alert udp any any -> 10.0.1.255 any (msg:"BZ1";)

alert udp any any -> any any (msg:"BZ2";)



And if I have such alert for 10.0.1.255, wich rule snort will use??

Is there any order?? Because I don"t have the two messages simulanously  BZ1 and Bz2!!

Could you give me any links about HOW THE RULES AND IN WICH ORDER ARE THEY EXECUTED???

Thank you very much!!