anchor.diff:  	    &key ink clipping-region transformation line-style line-thickness
   	    line-unit line-dashes line-joint-shape line-cap-shape text-style
   	    text-family text-face text-size))
  +
  + 
   ;;; 15.3 The Text Cursor [complete]
   
  
positive.code: (defgeneric handle-repaint (sheet region))
  (defgeneric repaint-sheet (sheet region))
  
  ;;;; 9 Ports, Grafts, and Mirrored Sheets
  
  ;; (defgeneric portp (object))
  
negative.code: 			       align-x align-y
  			       toward-x toward-y transform-glyphs))
  
  
  ;;; 10.1 Medium Components
  ;;;
  ;;; For reasons that are beyond me, many of the medium component
  