have a book icon. This is how Microsoft's HTML help viewer behaves.}
\twocolitem{\windowstyle{wxHF\_ICONS\_FOLDER}}{Book nodes in contents pane have
a book icon, book's sections have a folder icon. This is the default.}
-\twocolitem{\windowstyle{wxHF\_ICONS\_BOOK_CHAPTER}}{Both book nodes and
+\twocolitem{\windowstyle{wxHF\_ICONS\_BOOK\_CHAPTER}}{Both book nodes and
nodes of top-level sections of a book (i.e. chapters) have a book icon,
all other sections (sections, subsections, ...) have a folder icon.}
\twocolitem{\windowstyle{wxHF\_DEFAULT\_STYLE}}{{\tt wxHF\_TOOLBAR | wxHF\_CONTENTS