code: def init_frame(self, n):
          
          self.logger.debug("initializing frame %d" % (n))
          # create the frame, if needed
          try:
              fb = self.get_frame(n)
          except KeyError:
              fb = iis.framebuffer()
              self.fb[n] = fb
  
          fb.width = None
          fb.height = None
          fb.wcs = ''
          fb.image = None
          fb.bitmap = None
          fb.zoom = 1.0
          fb.buffer = array.array('B')
          fb.ct = iis.coord_tran()
          #fb.chname = None
          return fb
docs: NOTE: this is called from the IIS_RequestHandler