This excerpt taken from the AAPL 10-Q filed May 4, 2005.
Independent SARs. At the sole discretion of the Administrator, SARs may be granted without related Options. The following provisions apply to SARs that are not granted in connection with Options:
(i) The SAR shall entitle the Participant, by exercising the SAR, to receive from the Company an amount equal to the excess of (x) the Fair Market Value of the Common Stock covered by exercised portion of the SAR, as of the date of such exercise, over (y) the Fair Market Value of the Common Stock covered by the exercised portion of the SAR, as of the date on which the SAR was granted; provided, however, that the Administrator may place limits on the amount that may be paid upon exercise of a SAR; and
(ii) SARs shall be exercisable, in whole or in part, at such times as the Administrator shall specify in the Participants Award Agreement;
(iii) The term of each SAR shall be seven (7) years from the date of grant or such shorter term as may be provided in the Award Agreement.