PowerToys/src/modules/fancyzones/editor/FancyZonesEditor/GridZone.xaml

<UserControl x:Class="FancyZonesEditor.GridZone"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:FancyZonesEditor"
             mc:Ignorable="d" 
            Background="LightGray"
            BorderThickness="1"
            BorderBrush="SlateGray"
              Opacity="0.5"
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid x:Name="Frame" Visibility="Collapsed">
        <Canvas x:Name="Body" />
        <!--<TextBlock Margin="2" Text="Shift Key switches direction&#13;Ctrl  Key repeats"/>-->
    </Grid>
</UserControl>