Using the zoom function
The "Zoom" function is used to zoom in or out on the
entire contents of a diagram.
Zooming in on the contents of a diagram increases the size of the
elements shown, thereby making it easier to read.
Zooming out on a diagram's contents reduces the size of the elements
shown, and can be particularly useful if you are working with a large-scale
diagram and wish to visualize a larger part of the presentation.
To use the "Zoom" function, simply carry out the
following steps:
1. Click inside the diagram you want to zoom in or out of.
2. Roll the mouse wheel to zoom either in or out on the diagram contents.
The screenshot below shows an example of a zoom in and a zoom out.

Zooming in and
out of a diagram