MinMax(20,50,100, 200)

Draws minimum and maximum prices as a line chart for four different time frames.

1) The last 21 bars (close price)
2) The last 50 bars (close price)
3) The last 100 bars (close price)
4) The last 200 bars (close price)

Min/ Max values usually provide important resistance/ support levels.

Notes de version:

Added the 100th min/ max series.