Play Substraction Test | Commodore 64 Online Game (Unknown)

Fullscreen: This button enables fullscreen mode for the application.

Sound: This button toggles the sound on or off for the application.

Save Screenshot: This button allows you to capture and save a screenshot of the current screen.

Save Snapshot: This button saves a snapshot of the current state or configuration.

Restore Snapshot: This button restores the application to a previously saved snapshot.

Joystick Test: This button initiates a test for connected joysticks.

Joystick 1 on/off: This button toggles the power of Joystick 1.

Switch Joysticks: This button switches between different joystick controls.

Joystick 2 on/off: This button toggles the power of Joystick 2.