1. Introduction

2. Related Work

3. Scope and Definitions

4. Methodology and Design Space

5. D1: Geography Representation (GEO)

6. D2.1: Node Representation (NODE)

7. D2.2: Link Representation (LINK)

8. D3: Composition (COMP)

9. D4: Interactivity (INTERACT)

10. Addressing Specific Challenges

11. Discussion

12. Conclusion