Identify Previous-Next steps in the process instance

Consider a process definition with a For Loop step like the sample shown below. Select the Start step and configure the "Single Execution Iteration" property to OFF to understand the process flow individually for each iteration when rendered.

Generate and execute a new instance for the process to complete / sleeping status.

Select the For Loop step to view the step properties. 

Select View - Previous Next menu option. 

The page displays the current iteration (last in this case) and the previous-next process flow for the loop step (selected) as a dotted line shown below. You notice the previous iteration numbers which you may select. These numbers are enabled by the "Single Execution Iteration" property mentioned above.  

The process flow is rendered as per the iteration number selected. 

Here, the iteration 3 is selected.

Here, the iteration 2 is selected.

Here, the iteration 1 is selected.