Text files are numbered by chapter and section. The Australian edition gives the Use of Terms first, ahead of the Text, and this order is followed here, breaking the Use of Terms up into numbered sections under the label Terms. The files are called Terms 1 to Terms 7.
The text itself starts with the file Text 01.0, which means Chapter 1, Introduction. Text 20.5 means Chapter 20, section 5. Sections are not numbered in the book but each section has a new major heading in bold type. The first major heading is numbered, for example, Text 18.1, or Chapter 18, section 1. The section beginning at the next major heading is Section 2, labelled Text 18.2. In one instance a missed section had to be inserted later and is given a following letter, so that Text 28.5a follows Text 28.5. Where there are more than 9 sections, 8.9, for example, is followed by 8.91.
Where there is a long introduction, it is labelled, for example, Text 20.0, denoting Chapter 20, Section 0 (that is, Intro). Otherwise the introduction is included with Section 1 and there is no Section 0.