Code of conduct (5)
'code of conduct' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ethic that I've seen before include "An unusual factor in morals" , "Moral rule" , "Set of moral values" , "System of rules of behaviour" , "Code of principles" .)
'code of conduct' is the definition.
(protocol is a kind of code of conduct)
This is all the clue.
(Other definitions for protocol that I've seen before include "Code of correct conduct" , "Formal code" , "Etiquette with regard to rank or status" , "Official code of conduct for a group" , "Formalities" .)