What does the icon below do?

To copy is the act of duplicating material and replicating dual copies of file or data. Copying a file to a separate location is a standard procedure for backing up or sharing a file. When something is copied and remains there until something else is copied or cut on the computer by storing anything copied in the clipboard you can paste it multiple times. Copying creates a duplicate of that item in your computer's temporary memory.

You can almost always copy a web page, for example. Copying text means highlighting it by clicking just before the first letter you want to copy, press down on the mouse button while dragging it to the right, releasing after you have selected text and images by right-clicking and choosing "select all."