Node-RED
The place where your own logic goes.
Custom logic on an OptiBee is a Node-RED flow. Node-RED is one of the apps in the store; installing it gives you the flow editor on the device, and you can add community nodes from its palette.
There is no separate rules language to learn and no configuration file to write — the flow is the logic.
What a flow can reach
Values on the Edge Platform, which is where the measurements, forecasts and strategy outputs live. A flow can read them, act on them, and publish its own.
Placeholder
The concrete surface: which platform values a flow sees, under what names, and which nodes are pre-installed. This is the page an integrator actually needs, and it has to come from the Node-RED integration rather than be described from the outside.