Provides dynamic zooming (in and out).
To use this feature:
1.Select "Zoom Dynamic" from the "View->Zoom and Pan" menu
2.click anywhere in the view (Zooming will occur relative to this point)
3.To Zoom In, drag towards to the top-right corner of window
4.To Zoom Out, drag towards to the bottom-left corner of window
Tip: Use the mouse scroll wheel to dynamically zoom in and out of the screen.
Shortcut: Z