Re: Received DTD comments?

Joe English (
Sat, 12 Nov 94 11:20:00 EST wrote:
> * change to DL content model from (DT*, DD?)+ to (DT | DD)*.
> OK, I guess.
> (DT*, DD?)+ is almost certainly an illegal content model, because it's
> ambiguous (in the SGML sense). The changed version doesn't express the
> intent, but does match the same set of patterns, in a legal way.

(DT*, DD?)+ is actually unambiguous. Content models
can only be ambiguous if the same GI appears more
than once in the model, which is not the case here.

--Joe English