Chris Yocum wrote:

> I think you mean "combination characters" when you are talking about
> "superscript characters" (a with macron on top is a "combination
> character" in the unicode standard.)  Adding things to Unicode (6.1
> just came out last week) is a very arduous process.  I would recommend
> against it.

Thanks, Chris.

Dennis Groenewegen thinks that this is the most likely approach for us:

> The encoding initiative which seems to me most relevant to our  
> project, and also the most promising in terms of wider acceptance,  
> is MUFI (Medieval Unicode Font Initiative) - see the website at 
> .