I am encoding a medieval manuscript containing glosses (i.e. explanations
for words or phrases). These glosses often refer to and cite other sources
(mostly the Church Fathers). I thought that <gloss> might be appropriate and
more specific than something like <note type="glossa"> to mark up these
explanations. But I wonder why neither <cit> nor <quote> is allowed within
<gloss>, nor is any bibliographic reference.