advr.hlp (Topic list)
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Foreground/Background Operations (PLAY)
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 Foreground/Background Operations (PLAY)
 
 ■ Operation     Action
   ═════════     ═══════════════════════════════════════════════════════════
   MF            (Default) Sets music (PLAY statement) and SOUND to run in
                 the foreground. That is, each subsequent note or sound will
                 not start until the previous note or sound has finished.
 
   MB            Music (PLAY statement) and SOUND are set to run in the
                 background. That is, each note or sound is placed in a
                 buffer, allowing the Visual Basic program to continue
                 executing while the note or sound plays in the background.
                 The maximum number of notes that can be played in the
                 background at one time is 32.
 
 See: Duration and Tempo Commands
      Octave and Tone Commands
      PLAY Statement (Music)