<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

      HorizontalAlignment="Center" VerticalAlignment="Center">

<!-- Example 5-3. Invoking a command with a Button -->

<Button Command="Copy">Copy</Button>

<!-- End of Example 5-3. -->

</Page>