p.110. Bad list numbering: 4) 5) 6) should be 1) 2) 3).
p.116. SeeFigure 113.
p.119 bottom "itis"
p.129 last Note (on the limitations of hiding sections). Perhaps this
should be a Caution.
p.135. Caution. I think this should be a Note.
p.136. Note should be a Caution.