---
kind: "section"
citation: "1 C.F.R. § 21.12"
title: "1"
number: "21.12"
heading: "Reservation of numbers."
url: "https://uscodex.org/cfr/1/21.12"
---

# §21.12. Reservation of numbers.


In a case where related parts or related sections are grouped under a heading, numbers may be reserved at the end of each group to allow for expansion.


## Notes

### Amendments

[37 FR 23611, Nov. 4, 1972, as amended at 54 FR 9682, Mar. 7, 1989]

### Authority

Authority: 44 U.S.C. 1506; sec. 6, E.O. 10530, 19 FR 2709; 3 CFR, 1954-1958 Comp., p. 189.

### Source

Source: 37 FR 23611, Nov. 4, 1972, unless otherwise noted.

### Amendments

[37 FR 23611, Nov. 4, 1972, as amended at 54 FR 9682, Mar. 7, 1989]