How does TerraLine work? What are the teal and red lines?

Question

Accepted Answer

It finds the swing highs and lows (a high or low with 20 candles on its left and 10 on its right, each marked with a dot) and draws lines through them: a teal up line through two rising lows at least 20 candles apart, a red down line through two falling highs. The newest line of each is thick and runs on to the right; the one before is thin. The dashed lines are the script's targets: the most recent swing high above price (green) and swing low under it (red). What gets called: the Bounce BUY and Break BUY.