#165 Consider nested ab for formatting changes

[Hugh A. Cayless]

The next release of TEI, v4.5.0, will allow <ab> elements to nest, in order to represent things like indented or outset text where there's no obvious semantic shift (like, e.g. a new, indented paragraph). We might consider changing our recommendations to use this instead of attributes on <lb/> for these and other types of format shift.

[BODARD Gabriel]

Nice! My only concern with this suggested use of it is that several of the kinds of formatting shift that might be indicated this way (including indentation, text direction) frequently happen within words, names and similar features in inscriptions, causing problems with overlapping hierarchies.

Will need to see how often that's a problem, and if we want to suggest alternative approaches in that case…

[Elli Mylonas]

EM to post on Markup List for feedback.
- Epidoc avoids multiple ways of doing the same thing (<lb> with @rend vs <ab>
- On the other hand, adding @rend to <lb> is odd, as it's not rendering the break, it's rendering the line.
- This recommendation is treating <ab>as a surrogate for <line>but p rimarily for describing the original rendition.