Explaining for developing a shared context in collaborative design

Collaborative design often meets together experts of different domains. Such groups need to share a context but often limited this one is often limited to few elements as common language, common tools and a same goal (the design process). Our goal is to developing a shared context to make compatible different experts´ viewpoints. Making context explicit and shared supposes some explanatory capability. In this paper, we point out how context and explanation are intertwined, and the need of a uniform representation of elements of reasoning and of contexts for offering a larger spectrum of explanation in a collaborative design.