Zooming In and Out

Select the Zoom tool from the Orient ribbon group or status bar.
Click where you want to center the zoom.
Drag down to zoom into your design; drag up to zoom out.
You can also use the scroll wheel to zoom in and out.

Note: When working in any tool, you can use the scroll wheel to zoom, or Shift-click the middle mouse button and drag up or down. You can also press Ctrl+ or Ctrl- to zoom in or out a preset amount.