This excerpt taken from the EFX 10-K filed Feb 26, 2009.
3. Rules of Sub-Plan
The rules of the Plan, in their present form and as amended from time to time, shall, with the modifications set out in this schedule, form the rules of the Sub-Plan. If there is any conflict between the rules of the Plan and this Sub-Plan, the rules of this Sub-Plan shall prevail.
The Sub-Plan shall form part of the Plan and not a separate and independent plan.