This term has three uses.
Your Process Commander engine can operate in a distributed mode, running simultaneously on more than one server. Each server hosting the Process Commander rules engine software (but sharing one system name) is known as a node.
Externally, the node name is the same as the server name (machine name) on the network. (An internal identifier known as the Node ID is more granular.)
The System data instance (Data-Admin-System type) defines characteristics of the entire system or cluster.
The Systems and Nodes report identifies all nodes participating in your system now or at any time in the last 90 days. To see this report, open and run the standard list view rule System-Status-Nodes.SystemNodeDetails.ALL. UGLY
In an XML document, a node is a location within the internal structure of the document. The Parse XMLrule (Rule-Parse-XML rule type) performs data mapping based on the document nodes that the Parse XML rule references.
Each element in a hierarchy rule is called a node.