#window_frame  the framework that supports a window
  supertype:  framework__frame__framing  a structure supporting or containing something
  part of:  window
  part:  jamb  upright consisting of a vertical side member of a door or window frame
  part:  windowsill  the sill of a window; the horizontal member at the bottom of the window frame

No statement uses or specializes window_frame; click here to add one.