-Default preferences can be modified by the user.
-
-If a value is locked, it is also set as the default.
+* `"default"`: Read/Write: Settings appear as default even if factory default differs.
+* `"locked"`: Read-Only: Settings appear as default even if factory default differs.
+* `"user"`: Read/Write: Settings appear as changed if it differs from factory default.
+* `"clear"`: Read/Write: `Value` has no effect. Resets to factory defaults on each startup.