# File locana/l_border.rb, line 168
   def groove(frame_id, x, y, w, h, bcolor=DARK_COLOR, ocolor=LIGHT_COLOR, border_width=nil)
      bcolor = DARK_COLOR if (!bcolor)
      ocolor = LIGHT_COLOR if (!ocolor)
      border_width = @@supported_borders[:groove] if (!border_width)
      ridge(frame_id, x, y, w, h, ocolor, bcolor, border_width)
   end