LEI grants to our User the right, privilege, and license to publish and distribute LEI materials pursuant to this agreement. LEI will continue to be available to our User to train teachers to use LEI materials. LEI, its successors and co-publishers will retain all copyrights to materials. Materials shall not be changed or modified without LEI approval. The LEI copyright and permission to print shall be acknowledged on the inside cover or first page of the materials. Any LEI materials the User prints shall be made available at a reasonable cost to other individuals and ministries. The User will provide annual reports to LEI, for each language or ESL series used. All publications by our User referring to the use of LEI Bible-content primers, basic readers, and/or ESL curriculum should acknowledge their source. Either LEI or User retains the right to terminate this User agreement at any time. Notification to terminate must be in written form.