The /closedccs command is used to close all inactive DCC send/get windows; Inactive windows are the ones in which the DCC connection was closed but the window remained open.
This command was removed (Replaced by the /close command)
;Close all inactive DCC send/get windows /closedccs
Added: mIRC v4.52
Added On: 06/07/1996
Removed: mIRC v4.6
Note: Individual switches were not taken into consideration.