The Guidelines:

• Guideline: Understand the role of intent in design patterns.
• Guideline: Use Event Generators for asynchronous notification.
• Guideline: Use Factories for flexible object creation.
• Guideline: Use Adapters to grant access to objects.
• Guideline: Use state objects to localize state-specific behavior.
• Guideline: Use Proxies to control access to objects.
• Guideline: Use Strategies and Commands to pass behavior to objects.
• Guideline: Use Decorators to avoid hierarchy explosion.
• Guideline: Keep user interface and functionality separate.