click hold and drag used to-"Clicking and dragging" is a way to move certain objects on the screen. To move an object, place the mouse cursor over it, press and hold down the left mouse button, then move the mouse while still holding down the left mouse button.
doubleclick on the mouse is used to-Double-clicking allows two different actions to be associated with the same mouse button. It was developed by Bill Atkinson of Apple Computer (now Apple Inc.) for their Lisa project. Often, single-clicking selects (or highlights) an object, while a double-click executes the function associated with that object.
left mouse click is use to-Left-clicking is used for many common computer tasks, such as selecting objects, opening hyperlinks, and closing windows. Clicking and holding the left mouse button can be used to select text or perform drag and drop operations.
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