Add “at” before a Roman page

Warning²Federal courts, Illinois courts21st and 22nd editions

A page that could be mistaken for another part of the citation is set off with a comma and “at”; front matter numbered in lower-case Roman is one such page.¹

1. 1R. 3.2(a) Pages. Tables: R. 15.3 Title.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.