Structural Objects checkbox in Collaborative Lifecycle

New in FD01, there's a checkbox for "Include Structural Objects." Does anyone know what this does? It's not described in the Help files and is not mentioned in the FD01 release notes.


Incidentally, when you try to delete something, the "Whole structure" option is now replaced with "Structural Objects" but I'm not sure if or how it's related to the checkbox option shown on the lifecycle states.