제품을 구매하거나 렌트한 사용자만 코멘트를 남길 수 있습니다
Mohamed yehia Osman  

Indicator don't back redraw 

It starts drawing after initialized on chart 

new UP / DOWN arrows are kept on chart but of course support/resistance lines are redrawn ,, you cannot keep all this old lines on chart and add new lines too !!!