# While there are many advantages to converting SGML
at Highwire rather than
# at the publisher, there is one significant disadvantage: if a publisher
# significantly upgrades their DTD, a full-fledged parser update, coupled
# with extensive integrity testing, is required at Highwire.
And in the larger internetworked world limned in WP v. EE, so major a change
in what one node produces is an appropriate occasion to inquire whether
a particular downstream node remains an appropriate consumer of the altered