def slideHorizontally(self, colAdjust):

        self.startPosn[1] += colAdjust
        self.endPosn[1] += colAdjust
        for block in self.contains:
            block.slideHorizontally(colAdjust)

    # -------------------------------------------------------------------------
@todo: docstring
dataset/ETHPy150Open sahana/eden/modules/s3db/survey.py/survey_LayoutBlocks.slideHorizontally