s! domain = domain server = server Un-registers the given Windows computer as a Remote Access server in the Active Directory ...

%1!s! [ [domain = ] domain [server = ] server ]            
                                                                       
       Un-registers the given Windows computer as a Remote Access      
       server in the Active Directory of the given domain.             
                                                                       
       server - the computer name of the computer to be unregistered as
                a Remote Access server.  If no server is specified the 
                computer from which the command is issued is assumed.  
                                                                       
       domain - the domain in which the given server should be         
                unregistered.  If no domain is provided, the primary   
                domain of the computer from which the command is       
                issued is assumed.