| <!-- | |
| Any copyright is dedicated to the Public Domain. | |
| http://creativecommons.org/publicdomain/zero/1.0/ | |
| --> | |
| <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="400" height="400" > | |
| <defs> | |
| <mask id="msk"> | |
| <rect x="10" y="10" width="20" height="20" /> | |
| </mask> | |
| </defs> | |
| <rect x="0" y="0" width="160" height="160" fill="rgb(0,255,0)"/> | |
| <g mask="url(#msk)"> | |
| <rect x="40" y="40" width="80" height="80" fill="rgb(0,255,0)" style="mix-blend-mode: difference"/> | |
| </g> | |
| </svg> |
