A daily loss limit caps your loss for one trading day, measured either on realised P&L (most futures firms) or on balance plus floating P&L (most forex firms like FTMO, where open drawdown counts).
It is the most commonly breached rule. Sizing so that two losers in a row cannot reach the limit is the simplest protection.
See it on your own trades.
Merlin computes the metrics and rule distances above from your imported history, and checks your next trade against them before you enter.
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Firm figures reflect published rules at the time of writing. Firms revise rules often, so verify against the firm's site before relying on them.
Merlin's gauges derive from closed trades. Your firm watches live equity including open positions.
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