противоположно большему (opposite of more)
Ключи (Keys)
You may define your own less commands by creating a lesskey
source file. This file specifies a set of command keys and an
action associated with each key. You may also change the line-
editing keys (see LINE EDITING), and to set environment
variables. If the environment variable LESSKEYIN is set, less
uses that as the name of the lesskey source file. Otherwise,
less looks in a standard place for the lesskey source file: On
Unix systems, less looks for a lesskey file called
"$XDG_CONFIG_HOME/lesskey" or "$HOME/.lesskey". On MS-DOS and
Windows systems, less looks for a lesskey file called
"$HOME/_lesskey", and if it is not found there, then looks for a
lesskey file called "_lesskey" in any directory specified in the
PATH environment variable. On OS/2 systems, less looks for a
lesskey file called "$HOME/lesskey.ini", and if it is not found,
then looks for a lesskey file called "lesskey.ini" in any
directory specified in the INIT environment variable, and if it
not found there, then looks for a lesskey file called
"lesskey.ini" in any directory specified in the PATH environment
variable. See the lesskey manual page for more details.
A system-wide lesskey source file may also be set up to provide
key bindings. If a key is defined in both a local lesskey file
and in the system-wide file, key bindings in the local file take
precedence over those in the system-wide file. If the
environment variable LESSKEYIN_SYSTEM is set, less uses that as
the name of the system-wide lesskey file. Otherwise, less looks
in a standard place for the system-wide lesskey file: On Unix
systems, the system-wide lesskey file is
/usr/local/etc/syslesskey. (However, if less was built with a
different sysconf directory than /usr/local/etc, that directory
is where the sysless file is found.) On MS-DOS and Windows
systems, the system-wide lesskey file is c:\_syslesskey. On OS/2
systems, the system-wide lesskey file is c:\syslesskey.ini.
Previous versions of less (before v582) used lesskey files with a
binary format, produced by the lesskey program. It is no longer
necessary to use the lesskey program.
