The lesson on YouTube
Watch. Then work through the idea.
Watch the English lesson first, then use the worked example and quiz below to check the idea. The article is a companion, not a transcript.
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What is actually happening?
A flag candidate describes a faster move followed by a smaller correction against it. A bullish example follows an advance with a descending corrective channel; a bearish mirror reverses those directions. Definitions of depth, duration and slope must be stated.
Guided example · Selected swings and later closes · synthetic schematic
A local flag break is one event
Keep the impulse high separate from the corrective reference.
Restart & example assumptions
Authored synthetic observations, shown in sequence. Every comparison uses only the revealed data. This is a worked learning example, not live prices, broker execution or a profitability backtest. Follow the article’s exact definitions; measurements and pattern names alone do not authorize a trade.
For charts: tap a candle or swing to inspect it; drag horizontally to browse; wheel or +/− to zoom; arrow keys to inspect; Home to restore the step view.
Make the conditions explicit.
The source example advances from 100 to 112. Fix the corrective boundaries before evaluating any later crossing.
In this exercise, a completed close above the corrective upper reference at 109 is a local event. Check the earlier impulse high at 112 separately.
If the correction breaches your declared depth limit or later progress returns inside, record the relevant failed condition rather than drawing a new flag around it.
The quoted rules are illustrative research specifications. Parameters are not recommendations and have not been presented as profitable backtest results.
What can this cost?
A projected impulse distance is not an executable profit guarantee. Check available room, actual entry, protective order and friction independently.
How the idea can fail.
The correction can deepen into a broader decline. A crossing can also be followed by a return inside before the old high is exceeded.
Practical habit
Record the impulse, correction and candidate event as separate stages.
Go one level deeper
Include non-triggering candidates and failed continuations. A gallery of attractive winning flags is not a representative sample.
Check your understanding
Price closes at 110 after crossing a corrective reference at 109; impulse high was 112. What is established?
Further reading & boundaries
These examples are original educational exercises. General background: CME Group: position sizing; Fidelity: technical analysis. Neither endorses these example rules. No hypothetical result establishes future profitability.
Editorial revision: 13 October 2026 · Synthetic data · Educational use