Indicator wenting to the lower time frame(if compare with current chart time frame) and seek what happened first, the low of previouse bar was updated first or the high of previouse bar. In some trading strategies need to know exactly sequence of actions for outside bars to program the logic for testing on deep history. If first was updated the high of previouse bar indicator will draw green diamond above the outside bar. If first was updated the low of previouse bar then indicator will draw red diamon below the ouside bar. In cases where both side diamonds is plotted it meant the current Lower time frame resolution is not enough to clear figure out what was first Low of High, need choose lower resolution. I did not found ready to use examples and made my own. I hope it will be usefull for you. Best Regards.