Represents the redefine element from XML Schema as specified by the World Wide Web Consortium (W3C). This class can be used to allow simple and complex types, groups and attribute groups from external schema files to be redefined in the current schema. This class can also be used to provide versioning for the schema elements....Emulates C#-style floating point comparison where two NaNs are considered...Emulates C#-style floating point comparison where two NaNs are considered...