NSActionCell NSCreatesSortDescriptors NSCell NSCreatesSortDescriptors NSObject NSAllowsEditingMultipleValuesSelection NSRaisesForNotApplicableKeys NSTextField NSNullPlaceholder NSMultipleValuesPlaceholder Multiple values NSNoSelectionPlaceholder No selection NSTextFieldCell NSNullPlaceholder NSMultipleValuesPlaceholder Multiple values NSNoSelectionPlaceholder No selection