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

• In a Nutshell: The Top Ten Design Principles of the whatIf? Platform - Deryn
• How it's Organized: Of Modelbases, Model Families and Frameworks - Marcus
• TOOL - One Language to Rule Them All - One langauage for all parts, n-dimensional array base, 4GL, inspired by S & APL - Shona
• Views Explained - Shona
• Calibration Demystified - Marcus
• Scenario Management - Understanding Scenarios, Variables and Instances - Deryn
• Over all time vs. One time-step at a time -Bert