(1) In
graphical user interfaces,
drag refers to moving an
icon or other image on a
display screen. To drag an
object across a display screen, you usually
select the object with a
mouse button ("grab" it) and then move the
mouse while keeping the mouse button pressed down.
The term drag is also used more generally to refer to any operation in which the mouse button is held down while the mouse is moved. For example, you would drag the mouse to select a block of text.
