Gnu less

A pager for unix systems.

Documentation

man less	https://man.archlinux.org/man/less.1
man lesskey	https://man.archlinux.org/man/core/less/lesskey.1.en
github	https://github.com/gwsw/less

Locations

${XDG_CONFIG_HOME}/.lesskey

custom keybindings

Configuration

Colours

less colours can be controlled via $LESS_TERMCAP_* environment variables.
See https://unix.stackexchange.com/questions/108699/documentation-on-less-termcap-variables