Assertion: command's argument | /r/CapableOf | control mac/u lib/s a b c $lpt
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Source sentences:
text: operating systems, as well as the version of CLI that came with their Business Basic, uses only / as the switch character, is case-insensitive, and allows "local switches" on some arguments to control the way they are interpreted, such as MAC/U LIB/S A B C $LPT