Source of rotate.svg

<svg>

<g>
  <desc>
  Everything in this group will be rotated in a circle
  </desc>

  <animateTransform attributeName="transform"
                    type = "rotate"
                    values = "0 150 100; 360 50 100"
                    begin = "0s"
                    dur = "10s" />
  <rect x = "10"
        y = "10"
        width = "100"
        height = "100"
        style = "fill:red; stroke:#000099; stroke-width:4;"/>
</g>
</svg>