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   less    ( 1 )

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COMPATIBILITY WITH MORE

If the environment variable LESS_IS_MORE is set to 1, or if the
       program is invoked via a file link named "more", less behaves
       (mostly) in conformance with the POSIX "more" command
       specification.  In this mode, less behaves differently in these
       ways:

       The -e option works differently.  If the -e option is not set,
       less behaves as if the -e option were set.  If the -e option is
       set, less behaves as if the -E option were set.

       The -m option works differently.  If the -m option is not set,
       the medium prompt is used, and it is prefixed with the string
       "--More--".  If the -m option is set, the short prompt is used.

       The -n option acts like the -z option.  The normal behavior of
       the -n option is unavailable in this mode.

       The parameter to the -p option is taken to be a less command
       rather than a search pattern.

       The LESS environment variable is ignored, and the MORE
       environment variable is used in its place.