def markInputline( self, markerString = ">!<" ):
        line_str = self.line
        line_column = self.column - 1
        if markerString:
            line_str = "".join( [line_str[:line_column],
                                markerString, line_str[line_column:]])
        return line_str.strip()
Returns (cameraPositions, rays)
dataset/ETHPy150Open ipython/ipython-py3k/IPython/external/pyparsing/_pyparsing.py/ParseBaseException.markInputline--crossover with--dataset/ETHPy150Open RobotLocomotion/director/src/python/director/cameraview.py/CameraFrustumVisualizer.getCameraFrustumRays