[asterisk-users] queue information

[unplug]

Hi,

  When I issue a show queues command, it shows something below.
2600         has 0 calls (max unlimited) in 'leastrecent' strategy (1s
holdtime), W:0, C:491, A:29, SL:100.2% within 120s

Does anyone know any reference to explain the meaning of the about
information?
1s holdtime: what is that holdtime stand for?
W, C, A: What are they mean?
BTW, does it also contain in the database if I am using ARA?
Thanks.