Establishes a hard cut-off radius
for audibility of scripted sounds
Doesn't seem to do anything. It's not officially documented either, but the compiler eats it and there's a tooltip for it.
For now, limit the audibility of scripted sounds by using llTriggerSoundLimited
or the normal sound playback functions with exceedingly low volume
settings (e.g.: 0.05). You can also limit sound to the land parcel
by enabling the appropriate option in the land settings dialog
This article wasn't helpful for you? Maybe the related article at the LSL Portal
is able to bring enlightenment.