Description
Set the items you want in the constant combinator central-right of the radar.
The parameter is a unique symbol for this stop. Behaviour is undefined with multiple stops using the same signal.
It will try to keep a supply of at least 500 of each item you request, prioritising items which it has been waiting for longest. The train will try to supply 1000 of each item, and sends a lock-out signal that prevents "standard" interrupt trains from collecting items that a multi-sink station wants.