[1]
[CITE[Emacs VietThai environment]] <http://www.m17n.org/vietthai/forEmacs.html>

> As the proposal for VietThai script to the Unicode is still in progress, we use the Private Use Area for VietThai characters (U+F000..U+F07E). A VietThai font encoded accordingly is also available in the package.

[2] [CITE[Special filenames]]
( ([TIME[2011-03-01 18:26:29 +09:00]] 版))
<http://www.cygwin.com/cygwin-ug-net/using-specialnames.html>