anchor.diff:     "SCROLL-TO-TOP-CALLBACK"             ;callback
      "SCROLL-UP-LINE-CALLBACK"            ;callback
      "SCROLL-UP-PAGE-CALLBACK"            ;callback
  -  ;"SCROLLER-PANE"                      ;pane
  -  ;"SCROLLING"                          ;macro
  +   "SCROLLER-PANE"                      ;pane
  +   "SCROLLING"                          ;macro
      "SEQUENCE"                           ;presentation type
      "SEQUENCE-ENUMERATED"                ;presentation type
      "SET-HIGHLIGHTED-PRESENTATION"       ;function
  
positive.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
  
negative.code:   (:export
     "LINE-STYLE-EFFECTIVE-THICKNESS"
     "MEDIUM-MITER-LIMIT"
     "RAISED-PANE" "RAISING"
     "LOWERED-PANE" "LOWERING"
     "VIEWPORT-PANE"
     "DRAW-GLYPH" "DEVICE-FONT-TEXT-STYLE-P"
     "DRAW-IMAGE"
     "IMAGE-PANE"
  