coding
cod‧ing AC /ˈkəʊdɪŋ $ ˈkoʊ-/
noun [uncountable]a system of marking something with letters, symbols etc so that facts about it can be understood by someone who knows the system:
Most petrol stations use colour coding for different types of petrol.
A coding system is used to record what is found and when.
cod‧ing AC /ˈkəʊdɪŋ $ ˈkoʊ-/
noun [uncountable]a system of marking something with letters, symbols etc so that facts about it can be understood by someone who knows the system: