The Intellij IDEA
IDE for example has a mapping .dtd file on the harddisk for each URI, so when u mess up with a tag it imediatly highlights it so i guess the your appserver has the same, if it can't find it maybe then it goes online. Other servers may not even be interested in that. They would just do a check to see if all the tags have matching closing tags and all.
[ July 17, 2005: Message edited by: Balamaci Serban ]