Navigation Preferences
The "Navigation" tab contains settings related to HTML Help's navigation pane.

Use navigation pane
If this option is set, the navigation pane is disabled in the resulting help file. This removes access to tabs such as contents, index and search but makes the final appearance much closer to the original web site.
Open with navigation pane closed
If this option is set, the navigation pane is enabled but will be hidden when the help file opens.
Auto synch
If this option is set, the contents tab is automatically synchronised with the page being viewed.
Automatically show/hide the navigation pane
If this option is set, the navigation pane is automatically closed when the help file loses focus, to make the window smaller.
Default tab
Select the tab which is visible in the navigation pane when the help file is opened. This list is populated base on the tab selections below.
Note: If no tab checkbox is selected and this list is empty, a blank navigation pane is displayed. To prevent this, turn "Use navigation pane" off.
Contents tab
Displays the contents tab in the navigation pane.
Index tab
Displays the index tab in the navigation pane.
Note: The index must be provided by the user. The file must be named "sbchm.hhk" and placed in the Scrapbook data folder for the stored site. The MS compiler, anyway, is not capable of creating an index. You may be able to use a third-party software package to parse the sites files and generate an index file. If you want to do this, you should generate the index first, place it in the site's data directory and then run Scrapbook CHM Creator.
Search tab
Displays the search tab in the navigation pane.
Advanced search
Displays the advanced search options at the bottom of the search tab in the navigation pane.
Favorites tab
Displays the favorites tab in the navigation pane.
Tab position
Controls where the tabs are drawn in the navigation pane.