ocr: Articles - - More than 72,000 articles Knowledge in Depth --. More than 700 long articles Dictionary -- More than 73,000 dictionary definitions Index -- More than 231,000 index entries Illustrations = - More than 6,800 drawings, diagrams, and photographs Ilustrated Articles - More than 5,000 illustrated articles Multimedia -- More than 60 articles with audio, video, and animation Internet Links -- Thousands ofrelated Internet links, updated weekly Biographies -- More than 23,000 biographies Geography -- More than 15,000 geographical articles Yearbooks -- More than 3,300 geographical articles