Install xemacs21 by entering the following commands in the terminal:
sudo apt update sudo apt install xemacs21
Description:
highly customizable text editor metapackage
XEmacs is a full fledged programming language with a mail reader, news reader, info browser, web browser, calendar, specialized editor for more programming languages and other formats than most people encounter in a lifetime, and much more. . This package exists to cause the installation of the real XEmacs packages.
Homepage: http://www.xemacs.org/
Version: 21.4.24-5ubuntu1
Section: universe/editors