<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path d="M3 1S1 1 1 3v11c0 1 1 1 1 1h12c1 0 1-1 1-1V3s0-2-2-2zm0 2h1v3h8V3h1v10H3z" fill="#aaaaaa"/></svg>