XSLT and XPATH: A Guide to XML Transformations

13.3. XT

James Clark has been a driving force in specification design and authorship for markup technology. He was instrumental in the codification of the W3C specification for XSLT as its editor and was also principle author of the W3C specification for XPath. His processor, XT, is universally acknowledged as far and away the leanest, meanest, and fastest. It was no small shock to the markup community when he announced that he is no longer building revisions and upgrades. There is a list at the end of this section of the limitations in XT, as documented on James Clark's Web site. There is good news, however; a group called 4XT is taking on the task of developing XT further, and their Web site, http://www.4xt.org, documents their efforts.

Clark's ...