Home › CFR › Title 48 › Part 51748 CFR Part 517 — Special Contracting MethodsSubpart 517.1 — Multi-year Contracting§ 517.109— Contract clause. 271Subpart 517.2 — Options§ 517.200— Scope of subpart.§ 517.202— Use of options.§ 517.208— Solicitation provisions.