Quick EyeKeyCreator \ General-Interface \ Viewport \ Quick-Eye
This function allows for quick zooming using the mouse. It is enabled through Tools>Customize>Viewport. Pressing and holding the right mouse button over a viewport activates the Quick Eye mode. The cursor changes to a hand holding a magnifying glass.
Quick Eye Notes:
Quick Eye Settings under Tools>Customize>Viewport:
Moving in any of the four angled directions will cause a rubberband box to display around the regular cursor. To zoom to the window defined by the rubberband box, release the mouse button. This behavior can be modified for two of these directions through Tools>Customize>Viewport.