$SPY I'm here to teach...if you don't understand something on my chart...just ask....TL=Trendline DTL=Downtrend line UTL=Uptrend line....TL's should be considered resistance (where a stock has previously found sellers....on a close above = change in trend...So in this example the arrow pointing up suggests that IF/When we get over the TL $SPY will continue higher....make sense?