texinfo: @option

Indicating

@dfn

@command

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9.1.11 '@option'{OPTION-NAME}
-----------------------------

Use the '@option' command to indicate a command-line option; for
example, '-l' or '--version' or '--output=FILENAME'.

  '@option' is equivalent to '@code' in its effects.  For example:

     The option @option{-l} produces a long listing.
produces
     The option '-l' produces a long listing.