CFR › Title 43 › Part 1810Part 1810 — Introduction and General GuidanceSubpart 1810 — General Rules§ 1810.1— Rules of construction; words and phrases.§ 1810.2— Communications by mail; when mailing requirements are met.§ 1810.3— Effect of laches; authority to bind government.§ 1810.4— Information required by forms.