This excerpt taken from the MLP DEF 14A filed Mar 27, 2006.
(a) The period during which the right to exercise, in whole or in part, an Option granted to an Employee, Independent Director or a Consultant vests in the Holder shall be set by the Administrator and the Administrator may determine that an Option may not be exercised in whole or in part for a specified period after it is granted; provided, however, that, unless the Administrator otherwise provides in the terms of the Award Agreement or otherwise, no Option shall be exercisable by any Holder who is then subject to Section 16 of the Exchange Act within the period ending six months and one day after the date the Option is granted. At any time after grant of an Option, the Administrator may, in its sole and absolute discretion and subject to whatever terms and conditions it selects,
accelerate the period during which an Option granted to an Employee, Independent Director or Consultant vests.
(b) No portion of an Option granted to an Employee, Independent Director or Consultant which is unexercisable at Termination of Employment, Termination of Directorship or Termination of Consultancy, as applicable, shall thereafter become exercisable, except as may be otherwise provided by the Administrator either in the Award Agreement or by action of the Administrator following the grant of the Option.
(c) To the extent that the aggregate fair market value of stock with respect to which incentive stock options (within the meaning of Section 422 of the Code, but without regard to Section 422(d) of the Code) are exercisable for the first time by a Holder during any calendar year under the Plan, and all other plans of the Company and any Subsidiary or parent corporation thereof, within the meaning of Section 424 of the Code, exceeds $100,000, the Options shall be treated as Non-Qualified Stock Options to the extent required by Section 422 of the Code. The rule set forth in the preceding sentence shall be applied by taking Options and other incentive stock options into account in the order in which they were granted. For purposes of this Section 5.3(c), the fair market value of stock shall be determined as of the time the Option or other incentive stock options with respect to such stock is granted.