How to set text at the head of a RibbonApplicationMenu

Question

I'm trying to have text in the top level of a RibbonApplicationMenu (trying to the get the word File there similar to Word or Outlook). It seems the Microsoft.Windows.Controls.Ribbon.RibbonApplicationMenu

MSDN

supports a SmallImageSource but no text property. Setting the Label property doesn't work for this problem.

xmlns:ribbon="clr-namespace:Microsoft.Windows.Controls.Ribbon;assembly=RibbonControlsLibrary"    
<ribbon:RibbonApplicationMenu Label="File"><!--doesn't set the label -->
</ribbon:RibbonApplicationMenu>

The goal is to have the word "File" appear in the circled area below.

Answer 1

The simplest solution (to me) was to insert a DrawingImage with a GlyphRun inside. On a separate post is asked how to get the AdvanceWidths and GlyphIndicies for the GlyphRun. The result is below

<ribbon:RibbonApplicationMenu.SmallImageSource>
    <DrawingImage>
        <DrawingImage.Drawing>
            <GlyphRunDrawing ForegroundBrush="White">
                <GlyphRunDrawing.GlyphRun>
                    <GlyphRun
                            CaretStops="{x:Null}" 
                            ClusterMap="{x:Null}" 
                            IsSideways="False" 
                            GlyphOffsets="{x:Null}" 
                            GlyphIndices="41 76 79 72" 
                            FontRenderingEmSize="12" 
                            DeviceFontName="{x:Null}" 
                            AdvanceWidths="5.859375 2.90625 2.90625 6.275390625">
                        <GlyphRun.GlyphTypeface>
                            <GlyphTypeface FontUri="C:\WINDOWS\Fonts\SEGOEUI.TTF"/>
                        </GlyphRun.GlyphTypeface>
                    </GlyphRun>
                </GlyphRunDrawing.GlyphRun>
            </GlyphRunDrawing>
        </DrawingImage.Drawing>
    </DrawingImage>
</ribbon:RibbonApplicationMenu.SmallImageSource>

Resulting Ribbon: