What is the difference between a Unity .STU project and an .XEF project?

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An .STU file is a project created in Unity Pro.
An .XEF project is a Unity Pro application exchange file. It is a project that has been exported from Unity Pro.
NOTE: Any file extension beginning with an 'X' indicates the XML format (extensible markup language).

Legacy KB System (APS) Data: RESL162229 V1.0, Originally authored by on , Last Edited by on
Related ranges: Unity Pro