Remove the date parenthetical

Error²Federal courts, Illinois courts21st and 22nd editions

A date parenthetical marks a rule that is no longer in force, so a rule still in force is cited without one; Illinois requires the opposite for its own supreme court rules.¹

1. 1R. 12.9.3 Rules of Evidence and Procedure; B12.1.3 Procedural Rules, Restatements, Uniform Acts, and Similar Materials.
2. 2An error: the rule in note 1 allows one form, and this is not it.