When users create new datafiles through Site Studio Contributor the Primary File (primaryFile) field can be the source of some questions or confusion. This field is usually pre-populated with ?default.xml?. Sometimes users will ask what this field is and/or why they see it. One of the easiest ways to deal with this issue or answer this problem is to hide that field! Add the following field to the server's config.cfg and restart. It looks like this setting may have been added in the may releases, so this may or may not work for you depending on your version and when this new feature was added.