Flash 2.
expression1 <> expression2
expression1,expression2 A number, string, Boolean value, variable, object, array, or function.
Nothing.
Operator (inequality); tests for the exact opposite of the == operator. If expression1 is equal to expression2, the result is false. As with the == operator, the definition of equal depends on the data types being compared:
This operator has been deprecated in Flash 5, and users are encouraged to use the != operator.