anchor.diff:    SystemConfiguration     = [ CF Security ];
     TWAIN                   = [ Carbon ];
     Tcl                     = [];
  -  Tk                      = [ ApplicationServices Carbon X11 ];
     VideoDecodeAcceleration = [ CF CoreVideo ];
     VideoToolbox            = [ CF CoreMedia CoreVideo ];
     WebKit                  = [ ApplicationServices Carbon JavaScriptCore OpenGL ];
  -  X11                     = []; # used by Tk, should this exist?
   
     # Umbrellas
     Accelerate          = [ CoreWLAN IOBluetooth ];
  
positive.code:   PCSC                    = [ CoreData ];
    PreferencePanes         = [];
    PubSub                  = [];
    Python                  = [ ApplicationServices ];
    QTKit                   = [ CoreMediaIO CoreMedia MediaToolbox QuickTime VideoToolbox ];
    QuickLook               = [ ApplicationServices CF ];
    QuickTime               = [ ApplicationServices AudioUnit Carbon CoreAudio CoreServices OpenGL QuartzCore ];
    Ruby                    = [];
    RubyCocoa               = [];
    SceneKit                = [];
    ScreenSaver             = [];
    Scripting               = [];
  
negative.code:   AppKitScripting         = [];
    AppleScriptKit          = [];
    AppleScriptObjC         = [];
    AudioToolbox            = [ AudioUnit CoreAudio CF CoreMIDI ];
    AudioUnit               = [ Carbon CoreAudio CF ];
    AudioVideoBridging      = [ Foundation ];
  