<tt xmlns:ttm="http://www.w3.org/2006/10/ttaf1#metadata"
    xmlns:ttp="http://www.w3.org/2006/10/ttaf1#parameter"
    xmlns:tts="http://www.w3.org/2006/10/ttaf1#style"
    xmlns="http://www.w3.org/ns/ttml"
    xmlns="http://www.w3.org/2006/10/ttaf1">
  <head>
    <styling>
      <style id="s0"
        tts:textDecoration="underline"/>
      <style id="s1"
        tts:textDecoration="lineThrough"/>
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    <div>
      <p begin="10s" end="18s" tts:fontSize="32px">text 1</p>
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    <div>
      <p begin="20s" end="28s" tts:fontSize="2.2em">text 2</p>
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    <div>
      <p begin="30s" end="38s" tts:fontSize="150%">text 3</p>
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      <p begin="40s" end="48s" tts:fontSize="32px 16px">two values</p>
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    <div>
      <p begin="50s" end="58s" tts:fontSize=".5em">leading dot</p>
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