code: private void setBorder(int borderPosition, int borderStyle, float borderWidth, Color borderColor) {
          RtfBorder border = new RtfBorder(this.document, this.borderType, borderPosition, borderStyle, borderWidth, borderColor);
          this.borders.put(Integer.valueOf(borderPosition), border);
      }
docs: Sets a border in the Hashtable of borders
  
  @param borderPosition The position of this RtfBorder
  @param borderStyle The type of borders this RtfBorderGroup contains
  @param borderWidth The border width to use
  @param borderColor The border color to use