Files list needed for yui:

	y              - editor itself (binary)
	yhelp.html     - text of help system (html syntax)
	options        - global options
	keymap         - keyboard map
	colormap       - color map
	colortrans     - color translation table
	highlight      - highlight rules
	highlight_html - list of HTML tags with some info

Syntax of these files described inside of them as comments

Binary file can be in any directory, showed in variable environment
PATH. Other files usually is in the directory /usr/local/lib/yui or in
$HOME/.yui/. You can specify another place with the help of environment
variable YUI_PATH, when necessary. The status file have name
$HOME/.yui/status/_current_work_path_

Terminal tuning can be done by termcap or terminfo databases, select in
options file, default termcap

Editor turning is done through editing files in /usr/local/lib/yui or
similar files in $HOME/.yui/

If the terminal has no a switching key to the national alphabet the
switching can be done on ^J^N.
