For all repetitive information, such as person, place, date etc., authority files allow you to input information just once which can  then be used in other records if it is so required.
The use of authority files  speeds up the inputting process. They provide homogeneity and give structure to the information; guaranteeing  an efficient search.
The authority files: 
While inputting, it is possible to browse the hierarchy  and consult an element. You can expand the list with new terms or create a new  hierarchy at any time. 
	  Reference authority files are provided by default.
	  It is also easy to import thesaurus and files from other Mobydoc users.