field description

[Imran Imtiaz]

when i do w
wicontrol ath0 -L
it shows me the aps that are currently running i am pasting the output
SSID                        BSSID         Chan     SN  S  N  Intrvl Capinfo
                  [ 00:11:92:3e:35:80 ]  [ 1  ]  [  0  0  0 ]  100  [ ess priv shpr shst ]
                  [ 1 2 5.5 6 9 11 12 18 24 36 ]
LakeCity          [ 00:a0:c5:9e:b4:85 ]  [ 2  ]  [  0  0  0 ]  100  [ ess priv ]
                  [ 1 2 5.5 11 ]
MisDept           [ 00:06:25:df:83:3d ]  [ 6  ]  [  0  0  0 ]  100  [ ess ]
                  [ 1 2 5.5 11 ]
Yousuf            [ 00:14:bf:04:d1:f9 ]  [ 6  ]  [  0  0  0 ]  100  [ ess ]
                  [ 1 2 5.5 6 9 11 12 18 24 36 ]
c
can anyone tell me what does Capinfo field means e.g; ess = ?? priv = ?? shpr = ?? shst = ??

regards,
Imran Imtiaz