Yar appearance: Take the Chai and an optional parachute to the flying
saucer mesa area. Walk off the mesa and drop the Chai when Indy
starts to fall. Yar, from the game Yar's Revenge, will
appear at the top of the screen.
Programmer credit: Enable the "Yar appearance" code. Then continue
game play and obtain a high score. "HSW2", the initials
of programmer Howard Scott Warshaw, will appear in the inventory
after the game has been completed. Note: The "2" indicates
that this was his second game.
