Replace the word with the numeral

Error²Federal courts, Illinois courts21st and 22nd editions

“section 12”, “chapter 4”, “paragraph 7” — a section or other subdivision number is written as a numeral, whatever the general spell-out rule would say.¹

1. 1R. 6.2(a) Numerals.
2. 2An error: the rule in note 1 allows one form, and this is not it.