Place the currently selected object at the top of the hierarchy window in Track View.
The Zoom Selected Object button affects the hierarchy as well as the edit window. (In the case of the Function Curve display mode, it only affects the hierarchy window.) Clicking this button scrolls the hierarchy to place the track of the currently selected object at the top of the hierarchy window. If the object is a child of a closed hierarchy, the hierarchy is opened to display the selected object. If more than one object is selected in the scene, the uppermost selected object in the hierarchy list is placed at the top of the window. If no objects are selected, nothing happens. This function works only on object tracks.
Zoom Selected Object: Click this to place the currently selected object at the top of the hierarchy window in Track View.
The currently selected object is placed at the top of the hierarchy window.
This is handy to quickly find objects located in a hierarchy, for example a characters finger, and place it at the top of the hierarchy window.