1 CFR § 21.10 - Sections.

---
identifier: "/us/cfr/t1/s21.10"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "1 CFR § 21.10 - Sections."
title_number: 1
title_name: "General Provisions"
section_number: "21.10"
section_name: "Sections."
chapter_name: "ADMINISTRATIVE COMMITTEE OF THE FEDERAL REGISTER"
subchapter_number: "E"
subchapter_name: "PREPARATION, TRANSMITTAL, AND PROCESSING OF DOCUMENTS"
part_number: "21"
part_name: "PREPARATION OF DOCUMENTS SUBJECT TO CODIFICATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "44 U.S.C. 1506; sec. 6, E.O. 10530, 19 FR 2709; 3 CFR, 1954-1958 Comp., p. 189."
regulatory_source: "37 FR 23611, Nov. 4, 1972, unless otherwise noted."
cfr_part: "21"
---


# 21.10 Sections.

(a) The normal divisions of a part are sections. Sections are the basic units of the Code.

(b) When internal division is necessary, a section may be divided into paragraphs, and paragraphs may be further subdivided using the lettering indicated in § 21.11.