Like I keep saying, that's a *validity* constraint. Documents with DTDs
like the above aren't valid, but they *are* WF, unless someone can
show a WF constraint they violate.
-- 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)