def traceHuman(self):
        names = []

        frame = self #trace up
        while (frame): #while not above top
            names.append(frame.name)
            frame = frame.over #ascend one more level

        names.reverse()
        human =  '<' + '<'.join(names)

        names = []
        frame = self.under #trace down
        while(frame): #while not below bottom
            names.append(frame.name)
            frame = frame.under

        human += '>' +  '>'.join(names)

        self.human = human
        return human
traces human readable version of outline as '> <'separated string
dataset/ETHPy150Open ioflo/ioflo/ioflo/base/framing.py/Frame.traceHuman