Assistant for the SystZ trading system. Draws trend lines along adjacent zigzag extremes. The condition for the resistance line is that the right one should be lower than the left one. For the support line, the right one is higher than the left one. It is not allowed that there are other trend lines between the extremes along which the trend line is drawn. Extremes satisfying these conditions are marked with a fractal symbol. Closing the candle behind the line is a signal to open a position.