def colspan2span(cls, colspan): return SpanTool.add_each(colspan, -cls.COUNT_COLHEAD)
def span2colspan(cls, span): return SpanTool.add_each(span, cls.COUNT_COLHEAD)
def colspan2span(cls, colspan): return SpanTool.add_each(colspan, -cls.COUNT_COLHEAD)
def span2colspan(cls, span): return SpanTool.add_each(span, cls.COUNT_COLHEAD)