This excerpt taken from the MRO 8-K filed Jun 16, 2005.
Section 10. Effective Date and My Right to Revoke General Release
I understand that this General Release shall not become effective or enforceable until the revocation period discussed in the next paragraph has passed.
I understand that I may revoke this General Release after I sign it by submitting a written notice of revocation to R. L. Sovine of Marathon Oil Companys Human Resources Organization not later than the end of the eighth day following the date I sign the General Release. I understand that if I submit the written notice of revocation by mail, it must be postmarked no later than the eighth day following the date on which I sign the General Release. I also understand that if I revoke this General Release it shall not be effective or enforceable, and I will not receive the Consideration referenced in Section 1 of this General Release. I understand that the Consideration described in Section 1 will not be provided until after this General Release becomes irrevocable.