324. Special Cleanups are Cleanup steps invoked at specific times that have additional steps not present in a normal Cleanup.
324.1. When a Special Cleanup is invoked, the unique steps added will be inserted and defined by the sub-section that invokes it. Example: When a Combat Cleanup is invoked, the Combat section defines what steps are added to the Cleanup. See rule 461. The Resolution Step for more information. Example: When an End of Turn Cleanup is invoked, the End of Turn Phase subsection defines what steps are added to the Cleanup. See rule 317. The Ending Phase for more information.
324.2. If events during a Special Cleanup require another Cleanup, a normal Cleanup is invoked, not another iteration of the Special Cleanup.