title: Download custom font with ZPL
body: <p>I'm trying to download custom font .TTF to the Zebra printer by using ZPL commands.
  There is a ZPL command <strong>~DY</strong> which can download fonts to the printer. This command has the following parameters 
  ~DYd:f,b,x,t,w,data</p>
  
  <ul>
  <li>d- file location Accepted Values: R:, E:,B:,A:</li>
  <li>f - file name</li>
  <li>b - format downloaded Accepted Values:B (.TTF)</li>
  <li>x - extension of file Accepted Values:T (TTF)</li>
  <li>t - number of bytes in file Accepted Values:.TTF</li>
  <li>w - number of bytes per row Accepted Values:.TTF</li>
  <li>data - ASCII or ZB64 - Accepted Values:A,P or binary - Accepted Values:B,C</li>
  </ul>
  
  <p>but I can't find any detailed information about file location parameter. What does this all parameters <strong>R:,E:,B:,A:</strong> mean? Could someone explain this zpl command and show some examplehow to use it?</p>