> That is, can we declare an ENTITY that contains a PI?
Sure, why not? A parsed entity can have anything that matches
the Content[43] rule (after entity references have been expanded,
in the case of an internal parsed entity), and Content[43]
allows elements, character data, references, CDATA sections,
PIs, and comments.
-- John Cowan http://www.ccil.org/~cowan cowan@ccil.org You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)