Hold down the 'SHIFT' key and 'Y' key for lots of extra money.
        (stop at 32,000,000)

        To increase your cash balance by $500,000, enter the 'F1' screen.
        Hold down the 'SHIFT' key and hold down the '4' key to produce a
        dollar sign.  You'll immediately inherit lots of money. Apparently
        this only works from the main continent screen.