NSObject
   NSCell
     NSActionCell
       NSButtonCell
         NSMenuItemCell
           NSPopUpButtonCell
       NSFormCell
       NSSliderCell
       NSStepperCell
       NSTextFieldCell
         NSComboBoxCell
         NSSecureTextFieldCell
         NSTableHeaderCell
   NSColorPicker
     GSNamedColorPicker
     GSStandardCSColorPicker
       GSCMYKColorPicker
       GSGrayColorPicker
       GSHSBColorPicker
       GSRGBColorPicker
     GSStandardColorPicker
     GSWheelColorPicker
   NSMenu
   NSResponder
     NSView
       NSControl
         NSBrowser
         NSButton
           NSPopUpButton
         NSColorWell
         NSMatrix
         NSScroller
         NSSlider
         NSStepper
         NSTableView
           NSOutlineView
         NSTextField
           NSComboBox
           NSSecureTextField
       NSRulerView
       NSScrollView
       NSSplitView
       NSText
         NSTextView
           NSSecureTextView
     NSWindow
       NSPanel
         GSAlertPanel
         GSComboWindow
         GSHelpManagerPanel
         GSInfoPanel
         GSMemoryPanel
         NSColorPanel
         NSDataLinkPanel
         NSFontPanel
         NSHelpPanel
         NSMenuPanel
         NSPageLayout
         NSPrintPanel
         NSSavePanel
           NSOpenPanel
   NSToolbar