`This instrument contains the entire agreement of the Parties on the subject matter of this Agreement and there are no other assurances, assurances, guarantees, uses or transactions which affect it.` The purpose of this type of clause is to ensure that the conditions governing the obligations of the parties and their intentions are set out in a single contractual document. The aim is in turn to promote safety and, where appropriate, to prevent the parties from relying on statements or assurances in pre-contractual negotiations to determine what the contract requires as performance. Entire contractual clauses are generally intended to exclude assurances and statements by the parties on which the parties relied when concluding the contract, but which were not explicitly included in the contract. A typical overall clause of the agreement could be as follows: however, each case must be carefully examined in the light of the facts. Courts have sometimes found, apparently in contradiction with the general rule, that a full contractual clause (as opposed to a clear exclusion clause) can be used to exclude implied clauses. However, there are many restrictions on the effectiveness of entire contractual clauses. The final contract contained a whole contractual clause. Shoreline argued that this clause prevented Mears from relying on the pre-contractual agreement. Akenhead J.