The favorites tree gives a graphical representation of the favorite classes of the system, as opposed to the favorites menu.
In this tree, the folders are user-definable through the Organize Favorites dialog . They have no other goal than ordering the favorites. In particular, they are entirely independent from the clusters of the system.
Clicking a class in the favorites tree edits it. Keyboard navigation is also available. Favorite classes are pickable too, so that it is possible to send them to all interface components that accept classes.