Book excerpt: Organized around architectural projects, AutoCAD for Interior Design and Space Planning gives readers an understanding of the commands and features of AutoCAD 2009 and demonstrates how to use the program to complete interior design and space planning projects. Building on twelve years of updates, the book is appropriate for self-paced and lecture classes and covers both two-dimensional and three-dimensional drawings. Using numerous illustrations, the book captures the essence of this powerful program and the importance it plays in the interior design, architecture and space planning professions.