The control nodes section contains the following nodes:
If Else And End If: IF-Else-EndIf nodes are condition nodes which are used to specify any condition at the task level.
Start Subtask and End Subtask: Subtask nodes are used to execute a task until the nodes inside the task are successfully executed.
Start Polling and End Polling: Polling nodes are used to trigger the execution of tasks continuously at a given time interval, after completing previous execution.