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Semaphore arrow signal indicator based on the QQE oscillator. Signals are generated when there is a crossover of the main and the signal oscillator line.

The indicator uses SmoothAlgorithms.mqh library classes (copy it to <terminal_data_folder>\MQL5\Include). The use of the classes was thoroughly described in the article "Averaging Price Series for Intermediate Calculations Without Using Additional Buffers".

Fig.1. The QQESign indicator