Title: Under Pressure and On Time Author: Ed Sullivan Paperback: 304 pages Publisher: Microsoft Press; 1 edition (April 4, 2001) Language: English ISBN: 073561184 Under defining requirements (p. 143), Ed suggests defining general requirements and then more and more specific sub-requirements. Then, on p. 150, Ed draws a rectangle for categorizing requirements (pp. 148 ­ […]