Select Entities
- 
                Select a single entity by
                    left-clicking.
                
Figure 1. 
 - 
                Select multiple entities simultaneously using
                    window selection.
                
- For box, circle, or freehand selection, click-and-drag to draw a selection window.
 - For polyline selection, click-and-drag to draw a line, then release the mouse to create an end point. Continue drawing lines, then left-click the start point, middle-mouse-click, or press Enter to close the selection window.
 
Figure 2. 
Tip: You can also click and drag to select multiple entities in a browser. 
Window Selection Settings
Change window selection settings from the modeling window right-click context menu.

- Window Shape. Change the shape of the selection window when you drag your mouse.
 - Only Select Visible. Only select visible entities. Available for elements.