**Playing music from ITS**

To play music, the PDP-6 is required.
  - Power on the PDP-6.
  - Set address switches to 000000 and toggle the start switch.
  - Start MUSRUN.
  - The command to load a music file is the single letter ''L''.
  - Type the file name and carriage return.
  - MUSRUN will now load the music data into PDP-6 core memory.
  - Set PDP-6 data switch 1 to on to start playing.
  - Set switch 0 to stop playing.