4.1. Introduction4.2. How can 4D printing in design be approached?4.3. Opportunities and challenges in design: a strategic roadmap for research4.4. Capture and reuse of 4D printing knowledge4.5. Functional design4.6. From architectural design to detailed design4.7. Digital chain for 4D design and prototyping4.8. Claims and practical constraints4.9. Conclusion4.10. References