Index CFDs frequently range and give repeat chances to trade swings over a day or two. I focus on the D1 chart to sell toward the upper side of the range and buy at the lower side of the range using Renko charts for the trigger.
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The Renko charts are online indicators and not the product of...
There are articles on the mql5.com website and also a lot on YouTube. When you get the first search results you can go to the channels of several Renko traders.