The work area (user interface) > Structure Browser > Browser keyboard and mouse shortcuts
  
Browser keyboard and mouse shortcuts
You can use a number of keyboard and mouse actions to work with the Structure Browser more efficiently:
Click: Select a single item.
Press the Ctrl key and click: Select multiple items.
Drag and drop: Click and hold the left button to move items.
Press the SHIFT key and middle-click: Expands or collapses the selected object
Right-click: Displays a context-sensitive menu.
Right-click, then click Apply: Same as a double-click.