10 DEF FN Q%=1:DEF FN Q!=2:DEF FN Q=3:DEF FN Q$="4"
20 DEFINTQ:PRINT FN Q;
30 DEFSNGQ:PRINT FN Q;
40 DEFDBLQ:PRINT FN Q:PRINT
50 PRINT FN Q%;FN Q!;FN Q;FN Q$