p.86. e-mail.Is that how we spell it?
p.92. "icon for character formatting". Should be "icons". (It's right
in the figure caption but not in the text)
p.99. "Information such as page numbers...". I think there should be
commas after "Information" and "footer" to prevent the singular
"displays" being wrongly linked with the plural "numbers".
p.106. First sentence already used on previous page. I think the second sentence can go too.