D.C. Mun. Regs. tit. 27, § 3699
3699
3699.1
When used in this chapter, the following terms and phrases shall have the meanings ascribed:
Amendment - any change to a solicitation issued by the contracting officer.
Bilateral contract modification - a contract modification that is signed by the contractor and the contracting officer.
Change order - a written order signed by the contracting officer directing the contractor to make a change that the contracting officer is authorized to order without the contractor's consent pursuant to the contract.
Contract modification - any written change in the terms of a contract.
Supplemental agreement - a bilateral contract modification.
Unilateral modification - a contract modification that is signed only by the contracting officer.
SOURCE: Final Rulemaking published at 35 DCR 1688 (February 26, 1988); as amended by Final Rulemaking published at 59 DCR 14956 (December 21, 2012).