title: How to draw lines in Rich Text box
body: <p>I have created an invoice in Rich text box (which will send to printer for printing using dos command bill.rtf>>prn).because my Printer is dot matrix it will not stop paper if i am not send print command using dos. so i need to draw a lines in invoice to look proper invoice so is there any way to draw a line in rich text box using c#.
  now invoice look like this i want to draw proper lines between them</p>
  
  <pre><code>-------------------------------------------------
  Customer : Test  Address: 
  Invoice No:4933  Date:05/15/2013  
  -------------------------------------------------
  SNo|Item Name         |Size|Qty |Rate  |T.Amt |
  -------------------------------------------------
  1   CP+ESR              1    1   200.0  200
  2   ECG                 1    1   100.0  100
  -------------------------------------------------
                    Medicine Amount      : 300
                    Doctor Fees          : 0
                    ----------------------------------
                    Total Amount         : 300
  </code></pre>