VOLUME level

      Sets the system-wide master volume to the level specified as a percentage.
    QUERY VOLUME
      Returns the current application controlled master volume level. 0-100 is returned.
    QUERY HEADPHONES
      Queries the system-wide headphone setting. ON or OFF is returned.
    QUERY SPEAKERS
      Queries the system-wide speaker setting. ON or OFF is returned.
    WAIT
      The command is executed synchronously. The function waits until the requested action is complete before returning to the application. The WAIT keyword must be specified to receive return string information.

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