Hello, We're developing a workspace plugin which reads form either existing editors or on-disk files. We're using all the catalogs in the standard 12.0 release using this rather brute-force approach: <configProperty name="cat_dita" value="${install.dir}/../../../frameworks/dita/catalog.xml" /> <configProperty name="cat_docbook" value="${install.dir}/../../../frameworks/docbook/catalog.xml" /> ... <configProperty name="cat_xmlspec" value="${install.dir}/../../../frameworks/xmlspec/catalog.xml" /> <configProperty name="xml.catalog.files" value="${cat_dita};${cat_docbook};...${cat_xmlspec}" /> However, we dont know about any user defined frameworks. Is there a way of knowing the framework associations of editors/files so that we could use the specific catalog file (also reducing the possibility of conflicts between the catalogs). Alternatively access to a URI/Entity resolver appropriate for the type of file which we could use when parsing (xerces) may be useful. We know about XMLUtilAccess and its resolvePathThroughCatalogs method, but we'd like something we can use with the resolver/xerces directly. We've also seen some references to a 'grammarCache' object but are unsure how to use it. Is there something we can use to improve our catalog handling. Many thanks, Nigel & Anthony (working on a comparison plugin) -- Nigel Whitaker, DeltaXML: "Change control for XML" nigel.whitaker@deltaxml.com http://www.deltaxml.com Registered in England: 02528681 Reg. Office: Monsell House, WR8 0QN, UK