In accordance with the GSAR clause at 552.238-113, Authorities Supporting Use of Federal Supply Schedule Contracts, this contract covers all requirements that may be ordered, as distinguished from delivered during the contract term. This is for the purpose of providing continuity of supply or operations by permitting ordering activities to place orders as requirements arise in the normal course of operations. Accordingly, any order mailed (or received, if forwarded by other means than through the mail) to the Contractor on or before the expiration date of the contract, and providing for delivery within the number of days specified in the contract, shall constitute a valid order.