Guideline 18

Basic-units can be subdivided into lower-divisions and grouped into higher-divisions.

18.1.	A basic-unit may be divided into paragraphs. When a basic-unit contains a list, each element of the list should be related to the introductory words. To that end, inserting autonomous sentences or subparagraphs in a list should be avoided.
18.2.	In complex Acts, the basic-units can be grouped into higher-divisions, which usually start with chapters (divided, if necessary, into subchapters). When the text is extremely complex, chapters may be grouped into parts (which may, where necessary, be split into subparts). The chapters, subchapters, parts, and subparts should be designated with Arabic or Roman numbers. Each higher-division must, and each basic-unit may, be accompanied by a descriptive heading that summarises the matter which is covered.
18.3.	The basic-units should have a unique designation for the Act as a whole. The designations should be in Arabic numerals.
18.4.	Basic-units and their lower-divisions should be designated differently, to enable them to be clearly distinguished, and set out consecutively.
18.5.	Each higher-division, basic-unit, and lower-division may have "side notes" to classify the provisions. These may be located on the side of the page in a clear format so as not to confuse them with the descriptive heading (see Table 1 below). “Shoulder notes” placed on the shoulder of the provision serve the same purpose and are easier electronically. The notes should be short and should indicate the brief content of the provision.

Table 1: