ZoomIt is a program that allows zooming on any sector of the screen, with the aim of expanding the visualization, as if a magnifying glass was passed over. It can be useful for people with low vision.
The zoom option can be easily activated using a key combination, and then the area to be enlarged must be selected. You can adjust the increase or decrease using the mouse wheel.
ZoomIt also allows you to write notes and draw on the screen, so the combination of the two features discussed can be useful to apply during a presentation, where you will be able to highlight a part of the screen and write notes on it, That serve as a complement to the exhibition.
ZoomIt 4.5 is the latest version, updated in June 2013, of this utility that you can download free. It works with all versions of Windows, and weighs only 296 KB.