From the article:
For indicators to be useful, the indications they produce can’t arrive too late. Toward that all-important goal, here we introduce a new indicator plus a variation on that indicator that you will want to add to your charts.
Hassane Zibara
Draws Pivot Points Level Lines for formula's Floor,Fibonacci,Camarilla,Woodie
define a family of algorithms, encapsulate each one, and make them interchangeable. strategy lets the algorithm vary independently from clients that use it
ADR,AWR,AMR,Draws Average Range Lines