_SNDVOL handle&, volume!
- volume! is a value from 0 (silence) to 1 (full volume).
- In versions prior to build 20170811/60, the sound identified by handle& must have been opened using the _SNDOPEN to use this function.
h& = _SNDOPEN("bell.wav") _SNDVOL h&, 0.5 _SNDPLAY h&