Common use of Exercise Period and Vesting Clause in Contracts

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “Issuance Date”) and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date (the “Exercise Period”). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date on October 30, 2004 (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. This Warrant is issued by the Company pursuant to that certain Subscription Agreement between the Company and Holder (the "Agreement"). The exercise period "Exercise Period" is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date (the “Exercise Period”). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holderon January ___, 2003. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, on ______________ [five years from the Issuance Date Date] (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date on _____________, 2003 (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “Issuance Date”) and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date December 22, 2009 (the “Exercise Period”). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date on November __, 2005 (the “"Exercise Period”"). This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period. This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period. 2.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “"Issuance Date”") and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date on ______________ ___, 200__ (the “"Exercise Period”"). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.

Exercise Period and Vesting. The exercise period is the period beginning on the date of this Warrant (the “Issuance Date”) and ending at 5:00 p.m., Dallas, Texas time, five years from the Issuance Date on October 19, 2009 (the “Exercise Period”). This Warrant is vested in full as of the Issuance Date and is immediately exercisable by Holder. This Warrant will terminate automatically and immediately upon the expiration of the Exercise Period.