<>                       Not Equal to Operator

 exp1 <> exp2

    <> is a relational operator. If exp1 has a value different from that
    of exp2, the result of exp1 <> exp2 is -1; otherwise the result is 0.
    In IF statements, BASIC regards 0 as equivalent to FALSE and all
    nonzero values as equivalent to TRUE.

   exp1,exp2    Any numeric or string expression, but exp1 and exp2 must
                either both be numeric or both be strings; otherwise a
                Type Mismatch error occurs.