godot/editor/icons/BackBufferCopy.svg

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path fill="#8da5f3" d="m1 1v11h5v-2h-3v-7h6v-2zm6 3v11h8v-11zm2 2h4v7h-4z"/></svg>