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Principle 5: Navigation. Cognitive load. Javascript trick. Principle 6: Control. Please flush!!!. Which switch control the screen?. Principle 6: Control. Principle 7: Feedback. Immediate feedback. Constant feedback. Principle 8&9: Recovery & Constraints. Undo sending email.
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Principle 5: Navigation Cognitive load Javascript trick
Principle 6: Control Please flush!!! Which switch control the screen?
Principle 7: Feedback Immediate feedback Constant feedback
Principle 8&9: Recovery & Constraints Undo sending email Browser with security color
Principle 10: Flexibility Multiple manipulation interfaces Line example
Principle 12: Conviviality Unfriendly design Inter-------ruptions are everywhere diskpart.exe