> <sp ana="#character1-to-character2">what char1 says</sp>
> <interp xml:id="character1-to-character2">Interaction form Char1 to
Is this meant to cover only direct speech? How about other interactions, like:
He paid the man ten pounds and patted him on the back.
Or: He raised his arm in a threatening gesture
Or: He didn't really know what to say but the other seemed to understand him anyway.