730 ILCS 5/8-3-2: References to headings.

Where, in this Code, reference is made to a Section, Article or Chapter by its number and no Act is specified, the reference is to the correspondingly numbered Section, Article or Chapter of this Code. Where reference is made to "this Chapter" or "this Article" or "this Section" and no Act is specified, the reference is to the Chapter, Article or Section of this Code in which the reference appears. If any Section, Article or Chapter of this Code is hereafter amended, the reference shall thereafter be treated and considered as a reference to the Section, Article or Chapter as so amended.