Whatever the reason you have to navigate your computer without a mouse, using only your keyboard, mouse keys can help.

When programming like this, we can return the same key code that a keyboard generates, or we can pack it into a value so that the main loop knows the mouse is generating this event.

Camera Mouse is a free program, made at Boston College, that enables you to control the mouse pointer on your computer screen just by moving your head.

In fact, the mouse can be configured with almost any combination of key presses. In Microsoft Word and when browsing the web, I reconfigured the side wheel to work as a quick zooming tool.