In order to protect both parties, any agreement or contract should contain a provision called an integration clause and stipulating that the agreement is the only agreement between the parties regarding the matters that cover the agreement and that the agreement can only be amended in writing. This is important so that one party does not come back later and say yes, but in a telephone conversation we changed that, we just did not insert it into the document. While oral obligations may have contractual power, courts generally do not recognize applications for oral amendments to written contracts containing an integration clause. Tom Tauke, Verizon`s Epp on Public Policy on the context of the Google Verizon agreement. Then there is a closing and signing section that should mention that the parties intend to be legally bound by the agreement, and voila! You have a basic agreement. The example on the next page shows you the form.