VID (Auxiliary Historical Disciplines) is paleography, metrology, chronology, genealogy, heraldry, numismatics, etc. How the letter graphics and writing material changed, how they determine the time of creation of the document and the events described in it, what coins and orders existed in Russia, how our ancestors measured distance, areas and volumes, what were the counting systems of years and how to translate them into familiar to us, how to compose your pedigree - this and many other knowledge is not only necessary for a historian, but they are also the subject of passion for hundreds of thousands of our contemporaries.