When I use condor_userprio,I get the result:
----------------------------------------------------------------------------
[yangguang@tree ~]$ condor_userprio 
Last Priority Update:  8/28 18:32
                                    Effective
User Name                           Priority 
------------------------------      ---------
<none>                                   0.50
yangguang@xxxxxxxx                       2.00
------------------------------      ---------
Number of users shown: 1 
------------------------------------------------------------------------------
what does the <none> mean?