Robert J. Chassell has worked with GNU Emacs since 1985. He writes and edits, teaches Emacs and Emacs Lisp, and speaks throughout the world on software freedom. Chassell was a founding Director and Treasurer of the Free Software Foundation, Inc. He is co-author of the Texinfo manual, and has edited more than a dozen other books. He graduated from Cambridge University, in England. He has an abiding interest in social and economic history and flies his own airplane.