I have just been looking at chapter 15 of the guidelines. The recent
discussion of spaces makes me think that we need a new tag for what goes
between words. (<d> for divider?) <c> won't do--it is a character, and
can go inside a word just as easily as outside.
"Things that go between words" include:
* paraphernalia such as scribal symbols, doodles and embellishments.
I don't think that line, column and page breaks belong in this
class--they can happen between syllables.