1. Dialog Design Principles Fundamentals of Good Dialog

2. Fundamental Principles zPlan Content zMatch User Needs zPlan and Test zDetermine Formats

3. ROMC zRepresentations zOperations zMemory Aids zControls

4. Plan Content zCriteria Basic output requirements zProcess User interface needs zContent Data and processing requirements before zFormat

5. Match User Needs zNatural Action Sequences zMinimize Stress From Lack of control Unexpected Events Novelty Poor Responses (e.g. codes) zFocus on HELP when Getting Started Getting Stuck Recovering

6. Planning and Testing zSketch dialog before coding zTest Representative users All hardware Saturation and degradation Logs (errors, system failures, recovery) Security Acceptance measures

7. Format Input zMatch user expectations zAssure consistent keystrokes zPlan defaults zRequest input in user terms

8. Format Output zMeet system objectives zPerform business tactic zHuman likes Short lines Highlights Accurate labels, units and titles Minimize clutter Beware of codes Provoke action (so what?)