The proceedings from the August 2001 conference in Toronto feature the text of one keynote speech and the abstracts of three others, 28 full papers, abstracts for 14 state-of-the-practice talks, summaries of three panel sessions, abstracts of four research tool demos, and fourteen posters. Major topics include: representing and communicating requirements, requirements for product lines, organizational issues, methods and processes, scenarios and requirements negotiation, formal methods and tools, requirements and design, and requirements for critical systems. Author index only. c. Book News Inc.