List of Figures

• Knowledge Accumulation along Multiple Paths
• Abstract View of an I-type Tower
• Abstract View of an A-type Tower
• Abstract View of an X-type Tower
• Agents Included in SNEAKERS
• Control Flow Diagram
• Data Flow Diagram
• Logical View of the Blackboard System
• Screen Layout
• Implementational View of Control and Data Flow
• Widget Hierarchy Outline, screen 1
• Widget Hierarchy Outline, screen 2
• Implementational View of the Blackboard System
• Screen Layout
• System Start Up
• Enter Requirements
• Choose an Abstract Tower
• Choose Tower Dimensions
• Ready to Place the First Piece
• After Choosing ``Place Support'' Button
• Selecting the Support's Attributes
• Support Placed
• Middle of the Design
• After Choosing ``Place Bracing'' Button
• Platform &Bracing Placed and Design Complete
• Agent Buttons within the Design Aspect
• The Design Evaluator's Messages
• Relationships of Objects in COOL