| What is the official public ID of the TEI Lite XML DTD? I've seen at
| least two different IDs.
I don't know if public ID for TEI lite is officially fixed. You should
perhaps use TEI P4 public ID for the TEI Lite, since TEI Lite can be
see as a mere parameterization of TEI P4 using the include-entity
mechanism. This one I believe is "-//TEI P4//DTD Main DTD Driver
File//EN" (according to the following catalog:
http://www.tei-c.org/P4X/DTD/teicatalog.xml).
You will get more answers to this question on the TEI mailing list.
Regards,
Sylvain