Unicode
Rheinische Dokumenta cannot currently be fully written in Unicode but proposals are underway to have missing pieces added.
Rheinische Dokumenta is part of the Latin character set of Unicode, and thus part of its Basic Multilingual Plane (Unicode). It is to a large extent covered by single code points. While unaccented characters do that anyway, even some of the characters having diacritical marks nevertheless occupy only one character position in a text stream in their normalized form.
Read more about this topic: Rheinische Dokumenta