The Pull Modes of a node specify in more detail how a node pulls resources from another node. There are two different pull modes:
- a node pulls as much resources as it can, up to the flow rates of its inputs. If not all resources are available, it still pulls those that are. (default)
- a node can be set to pull all or none resources. In this mode, when not all resources are available, none are pulled. Nodes that are in 'all or none' pull mode are marked with an '&' sign.