This document introduces the concept of open design and proposes creating an Open Design Definition through collaborative editing on GitHub. It provides examples of open design in different fields like web, product, and fashion design. The document explains how Git and GitHub can be used as tools for distributed and open collaboration on the Definition by designers from around the world. It invites the audience to join the opendesign mailing list and contribute to the discussion and development of the Definition through the opendesign organization on GitHub.