Support and Resistance using donchian channels to validate tops/bottoms
(note: while donchians follow price closely within look back window, this will only update new top/bottom when making new extremes in the donchian channel)
combo with other systems:
EXPERIMENTAL: this script can be used as a trend follower if bgcolor is active, it can be used to catch extremes and target levels for a pull back to the mean, can be used as support and resistance with the time period open price and extreme. other uses, improvements let me know :p.