DIM a
 DIM b
 
 a = 1
 b = 2
 
 IF a = 1 AND b = 2 THEN
   ?  "Both expressions are true"
 END IF
 
 IF a = 1 OR b = 2 THEN
   ?  "At least one expression is true"
 END IF
 
 IF (a + 0 = 1 OR b <> 2 + 0) OR(b + 0 = 2 AND a + 0 = 1) THEN
   ?  "At least one expression is true"
 END IF

Result:

 Both expressions are true
 At least one expression is true
 At least one expression is true