This option specifies the number of blank characters that are reserved (but not actually printed) to the right of every line of listing output. The default value for this option is 4.
┌────┬──────┬─────┬────┬──────────────────────────────────────────────────┐ │Type│Global│Group│File│Default │ ├────┼──────┼─────┼────┼──────────────────────────────────────────────────┤ │P │Yes │Yes │Yes │-Lmr:4 (right margin is 4 blank characters wide) │ └────┴──────┴─────┴────┴──────────────────────────────────────────────────┘
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