7/3
Instructions, operating procedures, laws, regulations, etc.
These are factual in themselves but need to be understood and applied.
The recipes in a cookbook would come under 7/3. There is no guarantee that they would work or that you could carry them out. But they are factual operating instructions.
The key characteristic of code 7/3 is that the instructions or laws are set out as facts. How they are applied or even whether they work is another matter.


