"external" seems like a really useful feature for including schemas in a tree-like fashion.
I tried this for importing SVG and MathML to XHTML5: common.elem.struct-inline |= external "svg11/svg11.rnc" inherit = svg common.elem.struct-inline |= external "mml2/mathml2.rnc" inherit = math It works. However, I'd also like to refine productions in the SVG schema by adding RDF metadata and by allowing recursion to XHTML5 through foreignObject. If I add SVG.metadata.content |= external "rdf/rdf.rnc" inherit = rdf this refinement doesn't affect the external SVG schema. I can't figure out, how to get hold of the foreignObject definition from the outer schema, either. Is there a way to treat "external" merely as a handle to the start symbol of another schema file without shielding the productions of the external schema? Or do I need to factor out the start symbols from the included schemas and build the circular dependencies without "external"? -- Henri Sivonen [EMAIL PROTECTED] http://hsivonen.iki.fi/
