Remove the words after the colon

Error²Federal courts, Illinois courts21st and 22nd editions

An abbreviated periodical title stops at its colon, so the journal Taxes: The Tax Magazine is cited as “88 Taxes 112”, not “88 Taxes: The Tax Magazine 112”.¹

1. 1R. 16.4 Consecutively Paginated Journals; R. 16.5 Nonconsecutively Paginated Journals and Magazines; T13 Institutional Names in Periodical Titles; B16.1.1 Consecutively Paginated Journals; R. 16.1 Basic Citation Forms.
2. 2An error: the rule in note 1 allows one form, and this is not it.