definiens: ) and the other Galaxy Agreements ( as defined in the Second Extension ), contain the entire agreementand understanding between the parties respecting the subject matter hereof, and supersede all prior and contemporaneousagreements, statements, understandings, terms, conditions, negotiations, representations and warranties, whether written ororal, made by and among the parties concerning the matters covered by this Letter Agreement . This Letter Agreement may beexecuted in one or more counterparts, none of which need contain the signatures of each of the parties and each of which shallbe deemed an original . The parties may deliver executed signature pages to this Letter Agreement by facsimile or e - mailtransmission . No party shall raise as a defense to the formation or enforceability of this Letter Agreement as a contract, andeach party forever waives any such defense, that either ( i ) the use of facsimile or e - mail transmission to deliver a signature or(ii ) the fact that any signature was signed and subsequently transmitted via facsimile or e - mail transmission