This should (I hope) be a very easy question for those of you who are  
checking email over the holidays.

I have a set of TEI files that are transcriptions of manuscript copies  
of a particular history, one file per manuscript.  I'm working on  
creating a critical edition from these manuscripts, and so I want to  
assign sigla to them, and I want to make a note of what sigil I've  
assigned somewhere in the <teiHeader/>.  What is the best way for me  
to stick this in?

Happy new year to all (and happy leap second to all who observed it  
last night),

-tara