RunSnippetsExample.xaml

<FlowDocument xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <!-- <SnippetRunExample1> -->
  <Paragraph>
    <Run>Paragraph that explicitly uses the Run element.</Run>
  </Paragraph>

  <Paragraph>
    This Paragraph omits the the Run element in markup. It renders
    the same as a Paragraph with Run used explicitly. 
  </Paragraph>
  <!-- </SnippetRunExample1> -->
</FlowDocument>