In the main menu, type VHOEZ (or if you have a Deluxe version – JUMCO), after which the following key combinations will be available to you:
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[CTRL] + [SHIFT] + F7 – Win mission
[CTRL] + [SHIFT] + F8 – Play mission
[CTRL] + [SHIFT] + F11 – Get money
[CTRL] + [SHIFT] + F12 – Open all missions