Emacs

• http://www.gnu.org/software/emacs/
  • http://en.wikipedia.org/wiki/Emacs
  • http://emacswiki.org/
  • https://wiki.archlinux.org/index.php/Emacs

• http://www.xemacs.org/

• http://sachachua.com/blog/wp-content/uploads/2013/05/How-to-Learn-Emacs8.png
• http://www2.lib.uchicago.edu/keith/tcl-course/emacs-tutorial.html
• http://www.columbia.edu/acis/publications/emacs.html

• http://www.dina.kvl.dk/~abraham/religion/
• http://www.jwz.org/doc/emacs-timeline.html