The illustration window is available from the Test Window by pressing the View Illustration button. The illustration window can be resized by dragging. Illustrations can be moved around within the window the same way. This can be useful when viewing large illustrations. The mouse pointer turns into a hand (shown below), when moved over the illustration, the drawing can be moved around the viewing area by dragging.
Zoom - The drawings are enlarged 20% with the Zoom + button, and reduced by 20% with Zoom -.