By providing User Content to or via the Platform, you grant CK-12 a perpetual, worldwide, non-exclusive, irrevocable, royalty-free, fully paid right and license (with the right to sublicense) to host, store, transfer, publicly display and publicly perform (in each instance on a through to the user or viewer basis), reproduce, modify, distribute, or otherwise use and exploit your User Content, in whole or in part, in any media formats and through any media channels now known or hereafter developed.</li> <li>8.3 <b>Limited License Grant to Other Users</b>.