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How to Write an Expert Advisor or an Indicator
MQL4 Source Code Library for MetaTrader 4 - 104
The largest library features codes of free trading Expert Advisors, technical indicators and scripts. With the available applications you can trade in automated mode and analyze price dynamics. Use the library of codes to learn more about financial market sentiments.
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Acceleration/Deceleration Indicator (AC) measures acceleration and deceleration of the current driving force.
Easy example working with object: object creation, modification properties, redraw chart.