Tenses and usage.
Municipal Code of Chicago § 14X-2-201.1
in effect14X-2-201.1 Tenses and usage.
Words used in the singular include the plural. The reverse is also true. Words used in the present tense include the future tense. The reverse is also true. The words "must", "will", "shall," and "may not" are mandatory. The word "may" is permissive. The word "should" is advisory, not mandatory or required.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2675217Fetched: 10/24/2026
