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. The unique number of the class. The ID of the department which which contains the class. Provide an extension hook to customize XMrchHrClsRef. Provide an extension hook to localize XMrchHrClsRef. This type can hold a number of digits count 4. This type can hold a string of max length of 7 characters.