The Preview comprises an introduction followed by the notes (Sections 1-4) and appendices as separate scrolling web pages. The complete document is approximately forty thousand words long. If the previewed material is of any interest it can be downloaded from the files provided. All sections of the Preview together with the Downloads page can be accessed at any point using the navigation buttons.

No restrictions are placed on the reproduction, storage or transmission of the downloaded material, but any use of the text in published work should include an acknowledgement of the source. The notes published here may be subject to revision from time to time. The reference number given at the end of each of the sections applies to the current draft.