Install yelp-tools by entering the following commands in the terminal:
sudo apt update sudo apt install yelp-tools
Description:
Yelp documentation tools
A set of command-line tools to build and check your documentation, as well as an M4 file to use in your autotools-based build chain.
Homepage: https://wiki.gnome.org/Apps/Yelp/Tools
Version: 3.18.0-5
Section: universe/gnome