The AND operator is the logical intersection operator.
bool-expr AND bool-expr
If one of the operands is NULL, the logical expression evaluates to FALSE.
By default, the runtime system evaluates both operands on the left and right side of the AND keyword. This is the traditional behavior of the Genero language, but in fact the right operand does not need to be evaluated if the first operand evaluates to FALSE. This method is called short-circuit evaluation, and can be enabled by adding the OPTIONS SHORT CIRCUIT clause at the beginning of the module.
MAIN IF 256!=257 AND 257==257 THEN DISPLAY "This line should display" END IF END MAIN