You can use the following keyboard shortcuts for selecting objects in the Viewer window.
| Action | Keyboard Shortcut | 
|---|---|
| Hide selection | H | 
| Hide all | H with no selection | 
| Show selection | S | 
| Show all | S with no selection | 
| Select exclusive | Spacebar-click or drag | 
| Select and show in Navigator | Double-click | 
| Add to/Remove from selection | Ctrl-click | 
| Select all in group | G-click | 
| Add/remove group to selection | G-Ctrl-click | 
| Select object and children | Spacebar-right-click | 
| Select root of hierarchy | Ctrl-right-click | 
| Select object and parents and children | Shift-right-click | 
| Select whole hierarchy | Ctrl-Shift-right-click | 
| Go up the hierarchy (parent) | Alt-Up arrow | 
| Go down the hierarchy (first child) | Alt-Down arrow | 
| Go sideways in the hierarchy (left sibling, same level) | Alt-Left arrow | 
| Go sideways in the hierarchy (right sibling, same level) | Alt-Right arrow |