1 % Check that changing prefixes between the GREG definition, its use and 2 % the end of the assembly file does not change the GREG definition. 3 a1 GREG someplace 4 PREFIX b 5 a2 GREG 567890 6 PREFIX c: 7 h LDB $255,:a1 8 :Main LDB $254,:ba2 9 :someplace IS @ 10