Arbortext Editor supports the OASIS XML Catalog V1.1 standard defined on the OASIS web site at www.oasis-open.org/committees/download.php/14809/xml-catalogs.html. This standard defines an entity catalog that maps both external identifiers and arbitrary URI references to URI references. The catalog file is an XML document and can be edited with Arbortext Editor. The XML schema version of the document type for XML catalogs is available at Arbortext-path\doctypes\xmlcatalog. Also in that directory is the XML catalog file catalog.xml for the document type.