The Obj script is the base script for all other scripts. It contains the vital classes for making a game, as well as handy procedures.
Evaluates aNumber and returns -1 if it is less than zero, 0 if it is equal to zero, or 1 if it is greater than zero.
Compares aNumber to all of the numbers given as parameters. If it equals any of them, it returns TRUE, otherwise it returns FALSE.