Any use not authorized herein is prohibited, like Through illustration instead of Through limitation, building copies of CDT-4 for resale and/or license, transferring copies of CDT-4 to any social gathering not certain by this arrangement, developing any modified or by-product work of CDT-four, or making any commercial use of CDT-four. https://docs.google.com/drawings/d/1TWqIDCwC0fmpSesMRPpA2F0yAjatTNzmEYj4zwlQtBo/edit?usp=sharing