title: Bulleted list in RichTextBox - wpf
body: <p>I have a control of RichTextBox in my xaml.
  On runtime i loaded a text from a rtf file.
  I noticed that if have a bulleted list it looks bad, for example, in rtf have:</p>
  
  <p>•   Text</p>
  
  <p>•   Text2</p>
  
  <p>•   Text3</p>
  
  <p>•   Text4</p>
  
  <p>But after loaded into a RichTextBox control - it design as follow:</p>
  
  <p>•Text</p>
  
  <p>•Text2</p>
  
  <p>•Text3</p>
  
  <p>•Text4</p>
  
  <p>So, I see that it append as follow - for every • it append a Span control, and set a property FontFamily to Symbol, and append new Run object and setting it to •,So my question - how to can i append a new child before for append spaces? it possible to append new child by using style? someting like:</p>
  
  <pre><code>&lt;Style TargetType="{x:Type Span}"&gt;
                  &lt;Style.Triggers&gt;
                      &lt;Trigger Property="FontFamily" Value="Symbol"&gt;
                          ....
                      &lt;/Trigger&gt;
                  &lt;/Style.Triggers&gt;
              &lt;/Style&gt;
  </code></pre>
  
  <p>?</p>