How to use this material
This material is organized around a set of presentation slides which can be viewed in several ways. Each view is identified by an icon
as described below.
All in one A single page containing all explanatory text followed by small
accompanying slides.
Slide by slide One page per slide view. This is particularly useful
if you need to see the detail on a slide.
Slide text This page by page version of the slides is provided mainly for those
who want to cut and paste the text on the slides. (You will need appropriate fonts and rendering software to see the text
correctly.)
Overview The overview provides a list of headings to help you navigate around
the presentation quickly.