Emacs is a self-documenting, customisable, extensible text editor which is freely available for most types of computers.
A crib sheet is available for emacs and there is extensive on-line documentation within emacs as well as a tutorial. Further documentation (plus a copy of this document) is available from the help system's Emacs page
This document only looks at the under-used or undocumented features. Contributions to this document will be welcomed. Mail tpl@eng.