FlowDocument with Section

<FlowDocument xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Section LineHeight="2" Foreground="Red" Background="Blue">
    <Paragraph FontSize="18">WPF Unleashed</Paragraph>
    <Paragraph FontSize="32" FontWeight="Bold">Notes from Chapter 1</Paragraph>
  </Section>
</FlowDocument>