The last before a significant impulsive up-move (Bullish OB) or the last up-candle before a significant impulsive down-move (Bearish OB).
Identifying whether the market is in a state of expansion, retracement, reversal, or consolidation. inner circle trader - ict forex ict notes.pdf
An Order Block is a specific candle where institutional players have placed large buy or sell orders. When price returns to these levels, it often reacts strongly. The last before a significant impulsive up-move (Bullish