The "Britannica Ultimate Reference Suite 2006 DVD" contains over 55 million words and over 100,000 articles. It includes 73,645 "Britannica" articles, with the other articles from the "Britannica Student Encyclopædia," the "Britannica Elementary Encyclopædia" and the "Britannica Book of the Year"s (1993–2004), plus a few old articles from old editions of the encyclopaedia. The whole DVD also includes other bonus tools including maps, videos, sound clips, animations and web links. It also has study tools and a dictionary and thesaurus from Merriam-Webster.