Control Nodes Overview

Control nodes manage the flow of your processing from node to node.

Control Node	Description
Start	Defines global settings. This is the built-in initial node. See Start Control Node.
Conditional	Handles the flow of a branch based on the values for various conditions. See Conditional Control Node.
Loop	Allows the process flow to proceed through a set of one or more nodes multiple times. See Loop Control Node.
Fork	Branches the task flow into multiple simultaneous branches. See Fork Control Node.
Wait	Specifies a Fork node with branches that must complete before the flow can proceed. See Wait Control Node.
End	Completes the flow processing on a branch based on the values for various conditions. See End Control Node.

NOTE:

• Branches, which are created by Fork and Wait nodes or by each iteration of a Loop node, create their own scope. Anything that affects the state of the Production script in a branch will only affect the script for that branch and its children.
• Scope is helpful if you have multiple branches and you want to define different values of the same parameters. It is less helpful if you want to define parameters inside a branch and use them outside the branch.
• If the scope is a problem, the easiest workaround is to define the parameter outside of the branch—define the parameter before the fork or loop and then use it within the branch.
• If you need to determine the value of a parameter inside a branch and then use it outside the branch, write the value to a file and read it after the branch ends.