The Xerces-based XML parser is an alternative to the built-in XML parser. It can be
used to validate instances against XML schemas. It is invoked in a manner similar to OmniMark's built-in SGML
and XML parsers:
import "omxerces.xmd" prefixed by xerces. process do markup-parse xerces.xml scan file #args output "%c" done element #implied output "%c"