> /system logging print
Flags: X - disabled, I - invalid 
 #   TOPICS                                                   ACTION PREFIX    
 0   info                                                     memory           
 1   error                                                    memory           
 2   warning                                                  memory           
 3   critical                                                 echo             
 4   firewall                                                 disk             
 5   web-proxy                                                remote MTProxy   
 6   hotspot                                                  remote MTHotspot 
 > /system logging action print 
Flags: * - default 
 #   NAME                              TARGET REMOTE                           
 0 * memory                            memory
 1 * disk                              disk  
 2 * echo                              echo  
 3 * remote                            remote 192.168.0.3:514