IF / THEN

Strategy Lab decision trees use IF and ACTION nodes.

An IF evaluates conditions. A then or else path can point to another IF or to actions.

This is enough to express nested branches:

• if cash is available, buy
• else do nothing
• if drawdown is deep, deploy reserve
• else if a regime flag is active, buy more
• else buy the normal amount

Rules can also use actions[], which preserves order. A branch can set state and then buy as separate sequential actions.