Before any breakout discussion, we insist on a written range definition. The upper boundary is the highest close that held at least twice; the lower boundary mirrors that rule. Wicks may poke outside, but closes define the box in our workshop method.
Participants often redraw ranges after price moves because a wider box would have kept an old level valid. That hindsight adjustment is one of the main sources of false confidence. We photograph each student's initial markings and compare them to end-of-day charts to build discipline.
For Bangkok-based readers watching regional markets, timezone overlap matters. A break that occurs during thin lunch-hour liquidity may not carry the same weight as one printed in the first hour of the home session. We note session context beside every range on the workbook page.
A useful habit: write the date you defined the range and do not move the lines without a new journal entry explaining why. If the range required three revisions in a week, the setup may not be mature enough to trade.
Ranges that compress for ten or more sessions with declining volume often produce cleaner breaks — but also sharper traps. The workbook section on compression pairs with the false-breakout drill session for a reason.