Choose whether to show buttons in the Title Explorer that allow you to hide title, chapter, and section objects. The Title Explorer will display clickable plus (+) and minus (-) icons that allow you to collapse or expand the icons representing objects residing above the page level.
To enable showing the expand and collapse icons in the Title Explorer:
Select Lectora Preferences from the File ribbon. The Preferences window opens.
Enable the Show buttons for hiding objects in the Title Explorer check box.
Click OK.
The icons are enabled in the Title Explorer.
See also: Using the Title Explorer
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