The PMBOK(r) Guide-fourth edition continues the tradition of excellence in project management with a standard that is even easier to understand and implement, with improved consistency and greater clarification. Standard language has been incorporated throughout the document to aid reader understanding; new data flow diagrams clarify inputs and outputs for each process; greater attention has been placed on how Knowledge Areas integrate in the context of Initiating, Planning, Executing, Monitoring & Controlling, and Closing process groups; two new processes are featured: Identify Stakeholders and Collect Requirements