The following references may prove helpful:
- ``GNU Emacs Manual, Sixth Edition, Version 18 for Unix Users'',
February 1988, Richard Stallman.
- ``Emacs Lisp Reference Manual, Version 18 for Unix Users'',
June 1989, Edition 0.1 beta, Bil Lewis, Dan LaLiberte, and the
GNU Manual Group.
- ``Reference Card for GNU Emacs Version 18 on Unix Systems'',
1987, Stephen Gildea.