mask-invalidation-2-ref.html

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<html>

  <head>

    <meta charset="utf-8">

    <title>CSS Masking: mask repainting.</title>

    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">

    <link rel="author" title="Mozilla" href="https://www.mozilla.org">

  </head>

  <body>

    <svg width="200" height="200">

      <rect x="100" y="100" width="50" height="50" style="stroke:none; fill: purple;"/>

    </svg>

  </body>

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