The Support and Resistance Finder displays support and resistance zones on the chart. It is an accepted concept in Technical Analysis that changes in trend (highs and lows) form zones of support and resistance. It is also accepted that former zones of resistance can also become zones of support, and vice versa.
This is a companion discussion topic for the original entry at https://www.optuma.com/kb/optuma/tools/levels/support-and-resistance-finder