What is “texinfo” Package?

Official documentation format of the GNU project
For more details: https://www.gnu.org/software/texinfo/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install texinfo.

  brew install texinfo

Now, use texinfo!