The EPUB version of this publication strives to meet WCAG 2.2 Level AA. Alt text is included for all images. Long descriptions of complex images are included at the end of the ebook and linked to via the relevant figure caption. The index is fully linked and refers to the page numbers in the paperback (ISBN 9781589487758) and hardcover (ISBN 9781589488816) editions. Mathematical equations are included as images with alt text and as MathML in a element. MathML equations may not render properly on all platforms.
