<svg width="4in" height="3in">

  <title>Kona Lavadome mountain bike

  </title>

  <desc>This picture shows a mountain bike, a human-propelled, 

  multi-terrain vehicle. While it can be succesfully used on moorland, 

  forest, roads, and large hills it is not actually suitable for going 

  up mountains.

  </desc>

  <g id="bike">

    <defs>

      <symbol id="spoke">

        <desc>14/12 gauge double butted spoke</desc>

      </symbol>

      <symbol id="hub">

        <desc>black anodised low torsion hub</desc>

      </symbol>

      <symbol id="rim">

        <desc>twin wall, eyeletted rim</desc>

      </symbol>

      <symbol id="cogs">

        <desc>8 speed, wide ratio gearing</desc>

      </symbol>

      <symbol id="lacing">

        <desc>double cross lacing of 32 spokes</desc>

      </symbol>

    </defs>

    <g id="frontwheel">

      <title>Front wheel</title>

      <desc>The front wheel provides grip, steering and some shock absorption</desc>

      <use href="id(lacing)" style="rotation: 20deg; fillcolor: black"/>

    </g>

    <g id="backwheel"/>

    <g id="frame">

    </g>

  </g>

</svg>