This Amendment Number Four may be executed by each of the parties hereto on any number of separate counterparts, each of which shall be an original and all of which taken together shall constitute one and the same instrument.  The parties agree that this Amendment Number Four, any documents to be delivered pursuant to this Amendment Number Four and any notices hereunder may be transmitted between them by email and/or by facsimile.  The parties intend that faxed signatures and electronically imaged signatures such as .pdf files shall constitute original signatures and are binding on all parties.