 There is a project to make available MUFI characters, including version 4.0 ones, in LaTeX.The MUFI set includes standardized characters from many areas in the Basic Multilingual Plane and includes named character references ("entities") for use in SGML and XML, especially in TEI formats such as Menota.It also specifies many characters that are not encoded in Unicode, yet, in the Private Use Area which is designated for such use.