Steve, since it was brought up I need to correct you. I don't otherwise intend to poke my nose in here though.
There are 3 Loki "G" reloads that are not HP (High Power) and they are simply labeled G-whatever. Manufacturers are required to indicate that a specific G is not a "Model Rocket Motor" but a "High Power Rocket Motor" by putting "HP" in front of the motor designation on the instructions. Like
HP-G94.
There may be other specifics ways of labeling but I'm not 100% sure. I do not believe it is required information anywhere else, but if you know the pertinent codes like 3.3.24.4 then you know what you are looking at motor wise, HP or not HP. Further, it is also known by the codes that all H motors are 160Ns or more total impulse and are thus HP motors by their definition. A specific label on H motors and above would be thus be redundant and so it's not used on those.