VoiceXML 2.0 restriction schema for SRGS 1.0 (20030207) Copyright 1998-2002 W3C (MIT, INRIA, Keio), All Rights Reserved. Permission to use, copy, modify and distribute the VoiceXML SRGS adaption schema and its accompanying documentation for any purpose and without fee is hereby granted in perpetuity, provided that the above copyright notice and this paragraph appear in all copies. The copyright holders make no representation about the suitability of the schema for any purpose. It is provided "as is" without expressed or implied warranty. Restriction of SRGS 1.0 no-namespace schema for use in VoiceXML 2.0. Creates a new grammar content model, mixed-grammar, since unable to derive a mixed content model from a non-mixed content model same content as non-mixed grammar model in grammar-core.xsd except mixed