Add the article's title to the supra

Warning²Federal courts, Illinois courts21st and 22nd editions

When one writer has two cited works, a later “supra” with only the surname does not say which work it cites; the supra carries a shortened form of the article's title too.¹

1. 1B16.2 Short Form Citation. Tables: B15.2 Short Form Citation; R. 4.2(a) “Supra.”; R. 16.9(b) Supra.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.