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Error²Federal courts, Illinois courts21st and 22nd editions

A reporter that covers many courts — F.3d, F. Supp. 3d, N.E.3d — does not say which one decided the case, so the parenthetical names it.¹

1. 1R. 10.4 Court and Jurisdiction; B10.1.3 Court and Year of Decision.
2. 2An error: the rule in note 1 allows one form, and this is not it.