Not Equals ('=)
Reverses the truth value of the Equals operator applied to both operands.
Details
You can specify a Not Equals operation by using the Not operator with Equals. You can express the Not Equals operation in two ways:
operand '= operand
'(operand = operand)
Not Equals reverses the truth value of the Equals operator applied to both operands. If the two operands are not identical, the result is TRUE (1). If the two operands are identical, the result is FALSE (0).