This Agreement cannot be changed orally, and no agreement shall be effective to waive, change, modify or discharge it in whole or in part unless such agreement is in writing and is signed by the parties against whom enforcement of any waiver, change, modification or discharge is sought. Signatures inscribed on the signature pages of this Agreement or any formal amendment which are transmitted by telecopy or email transmission (e.g., PDF files) shall be valid and effective to bind the party so signing. Each party agrees to promptly deliver to the other party an executed original of this Agreement or any such formal amendment with its actual signature, but a failure to do so shall not affect the enforceability of this Agreement or any such formal amendment, it being expressly agreed that each party to this Agreement or any formal amendment shall be bound by its own telecopied or emailed signature and shall accept the telecopied or emailed signature of the other party to this Agreement or any formal amendment.