Stratasys and all Stratasys Affiliates a worldwide, non-exclusive, royalty-free, fully-paid, perpetual, irrevocable, sublicensable (through multiple tiers of sublicensees), assignable, and transferable license to use, reproduce, copy, modify, adapt, arrange, translate, create derivative works of, and publicly display, perform and communicate such User Submissions, for the sole purpose of making available, improving, and/or promoting the Site and/or Site Materials (the "<strong>User Submission License</strong>").