In this book clicking, double-clicking, and clicking
and dragging refer to operations with the left mouse button. The
terms Shift-clicking, Control-clicking, and Alt-clicking refer to the operations of clicking the left mouse
button while also pressing the Shift, Control, or Alt key. When the
right mouse button is used, the operation is referred to as right-clicking, and with the middle mouse button it is referred to as
middle-clicking.
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