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Hello a break out is powerfull move (up or down) which follows the break of a resistance line or a support line. Mots of the time you are testing several time a support line or a resistance line before be able to break it and when you finally succeed, it creates a powerful move to confirm the break.

On the chart, you can see it with one or several long candles.

How about resistance and support line. What are those and how to identify them?