Install zsh-doc by entering the following commands in the terminal:
sudo apt update sudo apt install zsh-doc
Description:
zsh documentation - info/HTML format
Zsh is a UNIX command interpreter (shell) usable as an interactive login shell and as a shell script command processor. Of the standard shells, zsh most closely resembles ksh but includes many enhancements. Zsh has command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and a host of other features. . This contains the documentation in GNU info and HTML formats.
Homepage: https://www.zsh.org/
Version: 5.4.2-3ubuntu3
Section: doc