Place a dividing line in a menu in WPF

Question

In XAML, how do I put a standard dividing line in a menu?

eg

           <MenuItem Header="_File" Name="m_fileMenu">
                <MenuItem Header="_Open" Command="ApplicationCommands.Open"/>
                <!-- Trying to put a divider here! -->
                <MenuItem Header="-" />  <!-- Wrong guess -->
                <MenuItem Header="E_xit" Command="ApplicationCommands.Close" />
            </MenuItem>

Answer 1

Use a Separator like this:

<MenuItem Header="_Open" Command="ApplicationCommands.Open"/>
<Separator />
<MenuItem Header="E_xit" Command="ApplicationCommands.Close" />