Things to add:
	Add command-execution potential to Beth. How should this be done?
		Monitor program (maintains output on one command)
		Fake wish shell (executes line upon Return, brings up output)
	menus for extra options
	spellchecker (maybe with tkispell)
	auto-saving
	Emacs-like tags

	Maybe separate windowbindings from forking, and make windowbindings (geometry, iconify, grab) a separate, optional module.
	Maybe change global vars to be in a single BETH array.
	Integrate Beth with other Tk apps.
