The 23 patterns contained in the book, Design Patterns: Elements of Reusable Object-Oriented Software have become an essential resource for anyone developing reusable software designs. Now these design patterns, along with the entire text of the book, are being made available on CD. This electronic version will enable programmers to install the patterns directly onto a computer or network and create an architecture for using and building reusable components. Produced in HTML format, the CD is heavily cross-referenced with numerous links to the online text.