May be used in a VLF-WIN application to import users for a VLF-ONE application.
This is the name of a reusable part that will be executed when the Administrator presses the Import Users button in the User Details tab (accessed using the Users option of the Administration menu).
The specified reusable part collects user data from external sources and creates an XML file of User Data from it. The Framework then automatically imports the User Data into the Framework and creates users from it.
See the source of shipped example component UF_IMPUS for more details on how to create a component like this.
Also see section Export or Import of Full or Partial User Data.
This property is in the Framework User Administration Settings tab.