In order to properly configure the integration of the MathML domain into specialized topic types it is necessary to create local versions of the OASIS-supplied mathmlDomainProxy.rng file. The OASIS-supplied file uses a direct URI reference to the mathml/mathml3/mathml3.rng file. However, non-OASIS users will want to use a URN to refer to this file. Thus we need to add a catalog entry to the RNG catalog for the mathml/mathml3/mathml3.rng file. My proposal would be to add this entry to the rng/technicalContent/catalog.xml file: <uri name="urn:oasis:names:tc:dita:rng:mathml3.rng" uri="rng/mathml/mathml3/mathml3.rng"/> I'm deliberately using an OASIS-managed name because this is a DITA-specific use of the MathML module and we do not want the possibility of a different version of this module being used in a DITA context. Cheers, Eliot ---- Eliot Kimber, Owner Contrext, LLC
http://contrext.com