This advanced reference system is perfect for expert writing, learning and spelling. A comprehensive learning source that comes with The Merriam-Webster Dictionary, biographical and geographical entries from Merriam-Webster's Collegiate Dictionary, Merriam-Webster's Guide to Punctuation & Style, and a complete thesaurus containing 500,000 synonyms and antonyms. Expand your knowledge with a Grammar Guide, a 5-language translator, word games and other mentally stimulating activities.