Additional Details ------------------------------ Product description: The best selling American Heritage Dictionary contains full definitions for more than 34,000 words, and with our new reference engine, it executes searches and queries up to 30% faster. By adapting Roget's II and the Oxford Thesaurus, we have a new thesaurus which is bigger than ever with over 1,500,000 synonyms. SYSTEM REQUIREMENTS: IBM 386/25PC or compatible, Windows 3.1 or higher, 4 MB RAM, CD-ROM drive, and 8.5 MB of hard disk space. MS-DOS 5.0 or higher.