- get-controller BRIDGE print the controller for BRIDGE\n\
- del-controller BRIDGE delete the controller for BRIDGE\n\
- set-controller BRIDGE TARGET set the controller for BRIDGE to TARGET\n\
+ get-controller BRIDGE print the controllers for BRIDGE\n\
+ del-controller BRIDGE delete the controllers for BRIDGE\n\
+ set-controller BRIDGE TARGET... set the controllers for BRIDGE\n\