'a' moves the ship that starts on the bottom (player 1) clockwise
'd' moves the ship that starts on the bottom counterclockwise
's' stops the first player
'w' the fire button
'j' moves the ship that starts on the top (player 2) clockwise
'l' moves player 2 counterclockwise
'k' stops player 2
'i' the fire button
'b' "reverses polarity"-I couldn't think of any other name for it. It works only for one player mode (where you get the pleasure of controlling both ships).
NOTE: there is a non-fatal bug in this game. If two shots hit an enemy at the same time and kills the enemy, then the enemy will be killed twice (so to speak). Anyways, what happens is that the program will continue on as if nothing has happened, even if there are no enemies left.
