I saw this message in another forum, anyone ever heard of it? Is it in a font we have?
The original message is here (http://tech.groups.yahoo.com/group/abcusers/message/9660).
http://lilypond.org/doc/v2.14/Documentation/notation/typesetting-mensural-music#mensural-contexts
http://lilypond.org/doc/v2.12/Documentation/user/lilypond/The-Feta-font.html#Script-glyphs
That's a good link for the specific notation being asked about, but you might like to update your bookmarks for general work. The current stable release of Lilypond is 2.16 which has some significant improvements to it. Anyone keen on mensural notation should go to the latest development version (currently 2.17.7) which has an improved mensural C clef (IMHO).
Thanks people, I've passed that information on.