StacksVerified U.S. regulatory reference

1 CFR §21.11

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The standard organization consists of the following structural units:
  1. (a)Titles, which are numbered consecutively in Arabic throughout the Code;
  2. (b)Subtitles, which are lettered consecutively in capitals throughout the title;
  3. (c)Chapters, which are numbered consecutively in Roman capitals throughout each title;
  4. (d)Subchapters, which are lettered consecutively in capitals throughout the chapter;
  5. (e)Parts, which are numbered in Arabic throughout each title;
  6. (f)Subparts, which are lettered in capitals;
  7. (g)Sections, which are numbered in Arabic throughout each part. A section number includes the number of the part followed by a period and the number of the section. For example, the section number for section 15 of part 21 is “§ 21.15”; and
  8. (h)Paragraphs, which are designated as follows: