Fix comment: short options can have optional arguments.
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@ -65,7 +65,7 @@
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// % time offset in milliseconds with optional s/m/h/d suffix
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// (longopt)
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// | this is required. If more than one marked, only one required.
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// ; long option's argument is optional (can only be supplied with --opt=)
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// ; Option's argument is optional, and must be collated: -aARG or --a=ARG
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// ^ Stop parsing after encountering this argument
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// " " (space char) the "plus an argument" must be separate
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// I.E. "-j 3" not "-j3". So "kill -stop" != "kill -s top"
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