Expanded navigation in Books By default the navigation in books is collapsed:


Fruits
Vegetables


Is there any way to make them expanded, so that the entire tree would be visible?


Fruits

Apples
Bananas

Vegetables

Tomatoes
Cucumbers
Carrots



Thank you!
The BookTree module does the job. Some details from its project page:

A simple tree presentation of one book.
What it does is to take as input a series of Book nodes and create a tree-like structure using Book node relationships.
Usage of the module is quite simple and flexible, and options exist to set the root node, the tree depth and to shorten long titles.

The BookTree Example contains a demo of it.