Set start node and end node for orders in a workflow

Current Situation

• With JS7 a user can add an order to a workflow that executes all the nodes of the workflow and then completes execution.
• It is not possible to set the start and/or the end node for the order, for example to start the order from a later node and to leave the workflow before the last node.

Desired Behavior

• The JS7 should provide two options to set the start node and end node of order execution in a workflow.
• The order should start from the indicated start node and should leave the workflow at the indicated end node.
  • The start node and end node can be the same, however, the end node cannot be a node that occurs before the start node in the workflow instructions.
  • A start node can be specified with or without specification of an end node and vice versa.
• The start node should be a node in the first level of workflow instructions, i.e. it is not allowed to start an order from a deeper hierarchy level:
  • Consider a workflow with a flat hierarchy of job nodes such as the sequence: job1, job2, job3, job4.
    • The order can start from any of job1, job2, job3, job4 and can end at the same node or any later node.
  • Consider a workflow with a hierarchy of job nodes: job1, If Instruction: job2, Else: job3, job4, Lock Instruction: job5,
    • The order can start from job1, from the If Instruction, from job4 and from the Lock Instruction.
    • The order cannot start from job2, job3 or job5.
    • The order can end at any node provided that the node does not occur before the start node of the order.