Add an explanatory parenthetical

Warning²Federal courts, Illinois courts22nd edition only

A comparison works only once the reader is told what the authorities are being compared on, so under the 22nd edition every one of them carries an explanation.¹

1. 1R. 1.2(b) Signal that suggests a useful comparison or contrast. Tables: R. 1.5(a) Substantive information.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.