This work is licensed under the Creative Commons Attribution-ShareAlike License. To view a copy of this license, see the file license.txt, visit http://creativecommons.org/licenses/by-sa/2.0 or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. This component schema definition provides the element group declaration and the attribute group declaration used for extension XML elements and attributes. This file has been modified by the Knowledge Media Institute of the University Koblenz-Landau (http://iwm.uni-koblenz.de). It contains the following changes: 1) Instead of "unique/strict.xsd" the schema "unique/loose.xsd" is imported because this reflects what is said in 1484.12.3-2005, page 35 (section C.1.3) 2) In all component XSDs the schemaLocation attribute was amended to the xs:import and xs:include statements. This enables the usage of the schemas with tools which don't deal well with missing schemaLocation informations. This file is available at "http://iwm.uni-koblenz.de/xsd/IEEE-LOM/loose"