Adjusting the Zoom Level
The zoom level of the 2D views is adjusted by enabling the Mouse Pan and Zoom Tool and using the mouse wheel to zoom.
- 
                On the view toolbar, click the 
                    Mouse Pan and Zoom Tool icon to activate the tool.
             - 
                Use the mouse wheel to zoom in the 2D views until the grid is visible.
                Note: The absolute coordinates of the mouse cursor is displayed in the status bar.
 - Click and drag the mouse to pan.