Collapses a single subbranch, when you choose the collapse button () to the left of the object category name or use the appropriate toolbar buttons or menu commands from the View menu.

Collapses all the subbranches under a single branch, when you use the toolbar, shortcut keys, and the View menu. Select the branch and click the Collapse Branch toolbar button, press the Minus (-) key, or use the Collapse Branch command from the View menu.

Collapses all subbranches for every branch, when you click the Collapse All Branches toolbar button, press Ctrl + / , or choose the Collapse All Branches command from the View menu.