This excerpt taken from the LUX 20-F filed Jun 28, 2006.
Option Agreement. Each Option shall be evidenced by a written agreement (the Option Agreement) specifying the Option exercise price, the terms for payment of the exercise price, the duration of the Option, and the number of Ordinary Shares to which the Option pertains. An Option Agreement also may contain such other restrictions, conditions and terms as the Board shall determine in its sole discretion, subject to the terms and conditions of the Plan and any Shareholder Action. Option Agreements need not be identical.