Fairly simple script that automatically draws highs and lows for the past X periods at various intervals.
3 Settings : "Sensitivity" which amounts to the horizontal separation from one high to the next high (default multiplicator : 10) "Transparency" ... Multiple lines piling up at the same level will cause the s/r levels to be more or less visible.
Variable "b" which is the HEX color for resistances (default : red) Variable "c" which is the HEX color for supports (default : blue)