This option specifies up to seven symbols, any one of which is interpreted as the logical NOT sign.
.------. V | >>-NOT--(--'---char-+-'--)-------------------------------------><
DEFAULT: NOT ('^')
The PL/I default code point for the NOT symbol has the hexadecimal value 5E, which on many terminals will appear as the logical NOT symbol (^).
If you are invoking the compiler from the commandline and specifying a caret (^) as part of the NOT option, you must precede the caret with another caret.
Examples:
not('\}')
not('^\}')
If you are invoking the compiler and specifying any compile-time options that use vertical bars (|) or a caret (^) on the command line, use double quotes around the character.