This excerpt taken from the EOG DEF 14A filed Apr 4, 2008.
The 2008 Plan is intended to serve as the successor to our 1992 Stock Plan, 1994 Stock Plan and Directors Stock Option Plan (each, a Prior Plan and collectively, Prior Plans). As such, no further grants will be made under the Prior Plans from and after the effective date of the 2008 Plan, except for awards with respect to shares of our Common Stock which by reason of the terms of the Prior Plans are again made available for grant due to the forfeiture or cancellation of awards outstanding as of the effective date of the 2008 Plan. All outstanding awards under the Prior Plans will continue to be governed by the terms and conditions of the instrument evidencing such grant or issuance. All terms, conditions and limitations, if any, that are set forth in any previously granted award agreement will remain in full force and effect under the terms of the respective Prior Plan pursuant to which it was issued.