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From the 'WAC TUTORIAL BY CHRISLEW200':
Ok this is the easiest one of the lot you have probobaly seen me use it allready in the
previous examples what does the “NEVER” command do.
The if never command normally follows another trigger it is to prevent the same event
happening time and time again and not causing a wave file which is activated by a area
trigger from playing over and over aslong as you are in that trigger.
So quite simply the if never command/trigger makes sure a wac command only happens
once.
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