CFR › Title 1 › Part 21 › §21.201 CFR §21.20Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Each amendatory document shall identify in specific terms the unit amended, and the extent of the changes made.(b)The number and heading of each section amended shall be set forth in full on a separate line.