Auto detect highest/lowest price within a range of bars. The range is user defined by selecting a fixed date (timestamp) for the left and right endpoints. As new bars appear in the chart, the endpoints do not move (thus "fixed" in time).
Optionally add Fibonnaci Lines (retracement or extension).
See the comments at the beginning of the script for a complete description.
--------------------------- While there are several versions of this indicator in TradingView, this one adds some unique flexibility. And it's open source, so you can improve on it.