Author:
Emilio Reale is a professional trader that makes some useful tool and places in public domain to help others to use his ordinary daily working tools.
The Alerter simply works on 1 or 2 trendlines and plays a sound file when the trendline has been broken so the only think you must do is name correctly the trendlines
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Place the mqh file in the include directory, the general.mq4 in the libraries directory and the trendlinealert.mq4 in the indicators directory