PLEASE NOTE THIS PROGRAM TESTS SOME GRAMMAR NEAR-AMBIGUITIES
DO .5 <- '?"'#65535~"'?.7$",2SUB.1"'~#21845"'~#1"$#1'~#3
DO .1 <- ',2SUB.1".2~.3"'~#1
DO .1 <- ,3SUB",2SUB.1'.2~.3'".4
PLEASE NOTE THE NEXT LINE IS TOO UNCLEAR TO PARSE
DOXXX .1 <- ,3SUB",2SUB.1".2~.3"".4
THE PREVIOUS LINE CAUSES ERROR ICL017I
