Level editor:
At Main menu, press Ctrl+F1 to access the Board editor.
More Codes:
Enter the following during play...
Ctrl+F1 Normal paddle
Ctrl+F2 Magnetic paddle
Ctrl+F3 Laser paddle
Ctrl+F4 Longer paddle
Ctrl+F5 On music
Ctrl+F6 Off music
Ctrl+F7 Changes ball direction if stuck