1) Why are operational indicators such as PE and ACCT checked off and what are they used for in Project Management? 2) What are the differences between the externally and internally processed activities and what are they used for in Project Management? 3) What do the activities in the project describe? What would happen to the project if the activities were not Completed in chronological order? 4) Why are milestones either assigned to WBS elements or to activities in projects in Project Management? 5) In productive environments and for large projects, when are elements released?