Usually the name of a document matches its title. But there are cases where the title has to be changed since the title has to be unique within a space, but the name is not required to.
Subdocuments usually contain the parent's title in its title. You may want to have a stakeholder's document name equal to the person's, but due to the uniqueness constraint, their titles have to differ. In all those cases usually the document name should be used for printing with Scroll Office instead of the title.
This feature is on per default. You may disable it by setting disable-document-name-as-scroll-office-title to true.