Hey David,
If you go to the tools menu and chose keyboard layout- customize, you can flip through the different modifier commands using the tabs at the top of the window. If you want a paper copy, just use the make photo option shortcut (Shift, apple, 4) and crosshairs will appear on your screen. Hold down your mouse button and drag across the keyboard layout screen and the Mac will generate a PDF labeled pict1 on your desktop. This you can print.
Cheers
Rob