positionBeforeContainingSpecialElement  122 Source/core/editing/DeleteSelectionCommand.cpp         Position s = positionBeforeContainingSpecialElement(start, &startSpecialContainer);
positionBeforeContainingSpecialElement  130 Source/core/editing/htmlediting.h Position positionBeforeContainingSpecialElement(const Position&, Node** containingSpecialElement = 0);