This action requests another iteration in a repeat loop created using the Repeat action.
In each iteration of the repeat loop, another iteration can be requested using the Next action. The windows, pages, etc. at the Next step will be sent back to the Repeat step and will become the output from the Repeat step in the next iteration. If no Next step is executed in a given iteration, that iteration will be the last one, and the repeat loop will end.
See the Repeat action for further information.
Following is a video giving an introduction to using the Repeat and Next steps.