This excerpt taken from the ESIO 10-K filed Jul 27, 2005.
Restricted Stock. The Board of Directors may issue shares under the Plan for any consideration (including promissory notes and services) determined by the Board of Directors. Shares issued under the Plan shall be subject to the terms, conditions and restrictions determined by the Board of Directors; provided, however, that any award made under this Section 10 the vesting for which is time-based will provide for a restriction period of at least three years, with the restriction to lapse no more quickly than with respect to one-third of the shares annually over the three-year restriction period. Subject to the provisions of the Plan, the restrictions may include restrictions concerning transferability, repurchase by the Company and forfeiture of the shares issued, together with any other restrictions determined by the Board of Directors. All Common Stock issued pursuant to this Section 10.1 shall be subject to a Restricted Stock Agreement, which shall be executed by the Company and the prospective recipient of the shares before the delivery of certificates representing the shares. The Agreement may contain any terms, conditions, restrictions, representations and warranties required by the Board of Directors.