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Parabolic SAR is the technical indicator developed by Welles Wilder for analyzing trend movements. The first time it was announced in a famous book “ New Concepts in Technical Trading Systems” published in 1976. SAR stands for as “stop and reverse”. Parabolic SAR is one of a few indicators that signalize about closing of positions. In many respects Parabolic is similar to a moving average with the only difference that SAR can change position against price. Under ascending tendency, the indicator is drawn under prices (candles, bars), under descending tendency it is put above prices. When price crosses Parabolic line, reversal of the indicator takes place.
On August 15, 1971, the United States of America unilaterally declared of canceling of direct convertibility of its national currency to gold. It finished an epoch of Bretton Woods currency system, US dollar rate started floating and gold turned into independent asset. This event is known in the history as Nixon Shock, because despite of being long-expected, it was a total shock for the most part of countries. The world required several years from then on to develop and launch new rules for international trading.
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