Using Zoom

Use the diagram context menu to obtain the required magnification in the Diagram view.

To specify the magnification in the Diagram view:

Right click on the diagram background.
From the context menu, select Zoom, and choose a command from the submenu.

There are three zoom option commands on the Zoom submenu:

In
Out
Initial Size

You can also use the following shortcuts to zoom in/out:

The + (plus) key to Zoom In
The - (minus) key to Zoom Out

You can use Zoom In and Zoom Out options to adjust the size of the diagram shown in Diagram view. To reset the zoom back to the default view, select Initial Size.