Dan O'Donnell wrote:
We should also add (I don't think I've seen it) that Dot Porter at Kentucky has been doing a lot with multiple hierarchies in TEI P4. I believe the Kentucky group have a couple of articles on the subject out.
-d
Hi Dan and all,
Sorry, I was on vacation last week and have only been going through my inbox this morning.
Marjorie, I believe that the articles listed on the TEI Overlapping Markup SIG website provide a good overview of the various approaches to handling overlapping markup/overlapping hierarchies: http://www.tei-c.org/wiki/index.php/SIG:Overlap
For work done at UK specifically, click down to "Kentucky Goddag." These are very technical papers, and mainly touch on methods for querying concurrent hierarchies rather than how to represent the concurrent hierarchies in markup. The Edition Production Technology, electronic editing software developed at UK by Kevin Kiernan through the Electronic Boethius and ARCHway projects, with continuing development through eBo, expresses overlapping markup through the use of empty elements. It looks a bit like HORSE/CLIX, but instead of only "breaking" the elements when there is an overlap, all elements are expressed as empty tags, so
<p>...</p>
becomes
<p __tag_type="START"/>...<p __tag_type="END"/>
This works well within the context of EPT, but if you're working with oXygen (for example), it would be easier to follow James' advice and select one hierarchy to take precedence, with the other expressed in empty tags. I look forward to HORSE/CLIX's inclusion in P5, it would be great to have a canonical method for handling overlaps.
Thanks, Dot