This is root element of this document which contains name space definitions for the document elements. It's a referenced element. For detailed description, please refer referenced element doc. It's a referenced element. For detailed description, please refer referenced element doc. Description is not available. Description is not available. Description is not available. Description is not available. Provide an extension hook to customize DiffGrpHdrDesc. Provide an extension hook to localize DiffGrpHdrDesc. This type can hold a string of max length of 120 characters. This type can hold a string of max length of 10 characters. This type can hold a string of max length of 6 characters.