isXML 'Common' DTD From: http://www.steel.org/xml/publicdrafts/draft1overview.pdf Date: May/July 2001 The classcommon.dtd was created as a repository of class definitions. By putting all of the class definitions into one dtd, the individual company maintenance will be reduced as well as create a common place for these definitions. Each individual document (ex. Order Status) will have its own DTD which will inherit from classcommon.dtd and describe the relationship between these classes. Common DTD Detail