I was working on a Validation Rule today for User Records, and notice a field on the User Record "Is Controlled by System",. This looks promising and useful, however, I can't seem to find anything about this field and it's purpose on help & training, the developer site, or even google. I'm assuming this is user error, but..
Does anyone know, what the intended purpose of this field is and what "Controlled by System" actually means?
Field Label: Is Controlled by System
API name: IsSystemControlled
Is Custom: FALSE