This section contains articles explaining the underlying design principles of the whatIf? modelling platform.

• Design Approach Concepts
• In a Nutshell: The Top Ten Design Principles of the whatIf? Platform
• How it's Organized: Of Modelbases, Model Families and Frameworks
• TOOL - Tools On Objects Language
• Views - Flexible Model Extension, Data Import/Export, User Interaction, and Calibration Tool
• Calibration Demystified
• Scenario Management - Understanding Scenarios, Variables and Instances
• Over all time vs. One time-step at a time
• An Overview of Stock-Flow Tools