- 1 : <notification string> If present, the sound will notify this string on this player when done. (Single player only)
- 2 : <stoppable flag> If present and true, then this sound can be interrupted by another playlocalsound command with notification string. It is a script error for a playsound that does not have this flag set to get interrupted by another playlocalsound with notify, or for a playlocalsound with notify that does not have this flag set to interrupt another playlocalsound with notify. (Single player only)"