Although printing quality is not the best, the manual was very helpful in order to reactivate this ancient but still good electronic musical instrument.
Text excerpt from page 22 (click to view)
HOW TO USE THE REMOTE TO CONTROL YOUR TV
LAST CHANNEL (LAST CH) button Use this button to select between the last two channels viewed. (Good for watching two sporting events, etc.)
Ant A 10
Ant A 39
PIP CH button Use the PIP CH button to select between main picture and sub-picture tuning. The channel number which is highlighted indicates which channel is being controlled. MENU button The MENU button will start the On-Screen Display.