Thanks low, but how many times have you used "open" values for upper trend lines, whether red or white candles? A lot of the time, right? The top of a red candle is the open. Does that contradicts what you just said?
See my question now? What distinction are you making where you say to use the closing price for an upper trend line candle body? Or why disregard the top of a black candle when drawing a line? If you disregard the black's "open" (top of candle) when drawing a line, then shouldn't we also disregard the red's "open" (top of candle) when drawing a line? If not, why not? I still don't see the reasoning being used, but I want to learn something on this IF there's something to be learned.