Subject: Re: PROGN for *ML? From: Erik Naggum <firstname.lastname@example.org> Date: Tue, 13 Nov 2001 15:06:17 GMT Newsgroups: comp.lang.lisp Message-ID: <email@example.com> * Tim Bradshaw | 1. Am I right to think there is no general PROGN-type element in HTML? You could probably get away with using SPAN. | 2. I suspect that it might be very hard to define such an element in an | SGML/XML DTD at all, without huge work. Basically as far as I can see | this would have to work by saying that if any element had content model | x, then it could also have a content model of PROGN, and somehow the | PROGN would then have a content model of x. This is done by faking it. ANY is a valid content model. Then you write up a "semantic contraints" paragraph in your "specification" that burdens your implementation with what the *ML "validator" should have done. /// -- Norway is now run by a priest from the fundamentalist Christian People's Party, the fifth largest party representing one eighth of the electorate. -- Carrying a Swiss Army pocket knife in Oslo, Norway, is a criminal offense.