The record showed that the agreement was signed by both parties at close of the mediation session. The Seventh Circuit held that the fact that the plaintiff failed to sign the subsequent formal settlement agreement, which contained clauses pertaining to indemnification, future cooperation between parties, and other clauses, which were not included in handwritten agreement, did not render handwritten agreement unenforceable, because those terms were not material to agreement. Similarly, defendant counsel’s email to plaintiff's counsel prior to mediation with a proposed "template settlement" that gave plaintiff seven days to revoke any settlement did not render handwritten agreement unenforceable, as the typewritten proposal was never signed by parties.