How to zoom in the screen with keyboard and mouse wheel?

Presentation Assistant allows you zoom in desktop screen with keyboard and mouse wheel. Below is the full list of hotkeys.

To do this	Press this Key Combination:
Screen Zoom Toggle Hotkey	Alt and 1
Zoom in screen	Ctrl and + Or Ctrl and Mouse Wheel
Zoom out screen	Ctrl and - Or Ctrl and Mouse Wheel
Exit zoom mode	Escape

The toggle hotkey means that pressing the hot key once activates the effect. Pressing the same key again deactivates it.