Originally Posted By: Susan
It doesn't matter if they add or delete some text or photos, it doesn't matter if they flip photos or drawings over, it doesn't matter if they change the colors, or make any other changes. THE MATERIAL BELONGS TO YOU.
Agreed. Technically they will have formed a derivative work, which both you and they will own. A third person who wanted to copy it would have to get permission from both of you. They do get some rights from their contribution, but you still keep your rights from your contribution.
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Quality is addictive.