This OverNode allows a sub-set of connected Nodes to be grouped up.
This is a Flow Node, in which the flow is divided into two branches, represented by two output flow ports.
The Body branch represents the entry point of the scope of the Group Node itself, allowing the execution of the following grouped nodes. Once the flow inside the Group is executed, the main branch (represented by the upper right corner port) is resumed.
To better describe the Group Node inside the Graph and its purpose, a Name parameter could be edited.