Everything to the left of these nodes decides whether to trade. These decide what the trade actually is.
The Entry opens a position when its condition is true, and holds the Cooldown that spaces trades out. The Trade node is one leg of the position, and the Bracket Order attached to it sets that leg's stop, target, stop mode and time exit. Two legs off one entry give you a partial exit. While a trade is open, the three setters move its stop, its target or its exit condition, and the Trade Variable reads the trade itself (entry price, entry ATR, the current stop and target), which is how trailing and breakeven stops get built. Scale-in Entry adds to a position that's already open.
Entry
Opens a trade when its condition is true; holds the Cooldown.
Scale-in Entry
Adds to an open trade.
Trade
One leg of a position, with its size.
Bracket Order
A leg's stop, target, stop mode and time exit.
Set Stop Loss
Moves the stop while the trade is open.
Set Target Profit
Moves the target while the trade is open.
Set Exit Condition
Closes the leg when a condition turns true.
Trade Variable
Reads the open trade: entry price, entry ATR, the stop and target prices.