Using a mouse with a wheel

A mouse with a wheel is a conventional 2-button mouse with a mouse wheel between the left mouse button and the right mouse button. By turning this mouse wheel, you can zoom in on your design and scroll through dialog boxes.

You can use the mouse wheel to do the following:

Zoom sections: Just move the wheel. You can zoom in (by turning the mouse wheel in a forward direction) and zoom out (by turning the mouse wheel in a backward direction). The zoom factor is 20%. The cursor defines the zoom center.
In dialog boxes, you can scroll up and down by turning the mouse wheel accordingly.