13.6 Personal Role Management and Elastic Windows

• Vision statement
• Set of people
• Task hierarchy
• Schedule
• The requirements for personal role management include:
• Support a unified framework for information organization according to users' roles
• Provide a visual, spatial layout that matches tasks
• Support multi-window actions for fast arrangement of information
• Support information access with partial knowledge of its nominal, spatial, temporal, and visual attributes and relationships to other pieces of information.
• Allow fast switching and resumption among roles
• Free user's cognitive resources to work on task domain actions rather than interface domain actions.
• Use screen space efficiently and productively for tasks.