1. The document outlines a theoretical framework for the C2C network to provide common guiding principles and language across different perspective studies and target areas. 2. The core team from VITO and Sustenuto will write an introduction on C2C and present at workshops to develop a shared understanding, then provide guidance for each target area. 3. The framework is based on "Limburg Principles" and will make them more tangible by exploring their practical implications for target areas and how to transfer good practices between regions.