Clicking this will copy the entire image or selected (highlighted) area to the Windows clipboard where you can paste it in a new image, existing image, or another graphics program.
Clicking this will erase the entire image or selected (highlighted) area from the current document and place it in the windows clipboard so you can paste it a new image, an existing image, or in another graphics program.
Clicking this will select a specific region (area) of the currently displayed image. Simply position the cursor where you want to begin the selection then holding down the left mouse button drag the cursor to where you want to end the selection and release the left mouse button once your region has been defined.