anchor.diff:    (:export
      "LINE-STYLE-EFFECTIVE-THICKNESS"
      "MEDIUM-MITER-LIMIT"
  -   "SPACING-PANE" "SPACING"
      "RAISED-PANE" "RAISING"
      "LOWERED-PANE" "LOWERING"
      "VIEWPORT-PANE"
  -   "SCROLLER-PANE" "SCROLLING"
      "DRAW-GLYPH" "DEVICE-FONT-TEXT-STYLE-P"
      "DRAW-IMAGE"
      "IMAGE-PANE"
  
positive.code:    "T")
    ;;
    (:export
     "*ABORT-GESTURES*"                   ;variable
     "*ACCELERATOR-GESTURES*"             ;variable
     "*ACTIVATION-GESTURES*"              ;variable
  
negative.code:    "SPACE-REQUIREMENT-MIN-HEIGHT"       ;generic function
     "SPACE-REQUIREMENT-MIN-WIDTH"        ;generic function
     "SPACE-REQUIREMENT-WIDTH"            ;generic function
     "SPACING"                            ;macro
     "SPACING-PANE"                       ;pane
     "STANDARD-APPLICATION-FRAME"         ;class
     "STANDARD-BOUNDING-RECTANGLE"        ;class
     "STANDARD-CELL-OUTPUT-RECORD"        ;class
  