Page Orientation

<svg width="8.5in" height="11in" viewBox="0 0 612 792">

  <rect x="36" y="36" width="540" height="720" fill="yellow" stroke="black"/>
  
  <pageSet>
  
    <page>
      <text font-size="30" x="72" y="108">This is portrait</text>
    </page>

    <page page-orientation="90">
      <text font-size="30" x="72" y="108">This is landscape</text>
    </page>

  </pageSet>

</svg>

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