Red Hat Enterprise Linux is designed to use a three-button mouse. If you have a two-button
mouse, you should have selected three-button emulation during the
installation process. If you are using three-button emulation, pressing
both mouse buttons at the same time equates to pressing the missing
third (middle) button.
In this document, if you are instructed to click with the mouse on
something, that means click the left mouse button. If you need to use
the middle or right mouse button, that will be explicitly stated.
(This will be reversed if you have configured your mouse to be used by a
left handed person.)
The phrase "drag and drop" may be familiar to you. If you are instructed
to drag and drop an item on your GUI desktop, click on something and
hold the mouse button down. While continuing to hold down the mouse
button, drag the item by moving the mouse to a new location. When
you have reached the desired location, release the mouse button to drop
the item.