The Focus Concise Oxford English Dictionary 11th Edition PC CD ROM is a comprehensive language reference tool that offers unlimited use on multiple devices. With a standard licence category, this CD format dictionary is specifically designed for Microsoft Windows operating systems such as XP, 2000, Me, NT, and 98. The product provides reliable English language information for educational, language, and reference purposes, making it a valuable resource for individuals seeking accurate and up-to-date vocabulary and definitions.