what is Clean Plot/Outline and other settings?



In setting > Movies>Scraper – Data

what is some of these settings doing

-Clean Plot/Outline

-Add movie automatically to Collections
-Save extended collection information?
note = also what is difference between those two settings

Also is there any FAQ or manual that explains what all the settings do?
At some point these settings were added but unfortunately no documentation exists
so for many people would have no idea what they do.