1.6 (BOI'95) IFTHENELSE

                   Testing protocol

        Test No.    Output                  Points
       -------------------------------------------------
        Test 1     1(No variables)             2

        Test 2     TS                          5

        Test 3     109,-110,111,-112,113       5

        Test 4     Ts, 109,110,111,112         5

        Test 5     ts, 105,106                 3

        Test 6     ts,                         5

        Test 7     109,111                     5

        Test 8     ts, 20                      5

        Test 9     ts, 26, 30                  5

        Test 10    3, 4                        5

        Test 11    29                          5

       ------------------------------------------------
                                       Total    50