"Step explanation" refers to a clear and detailed description or instruction that breaks down a process or concept into individual steps, making it easier to understand or follow. Full definition
Step by step explanation of how to make a cloud in a class. (tes.com)
If you want a step by step explanation on how to make this juice, I've filmed a little tutorial for you. (thediva-dish.com)
Definitely recommend it to anyone looking to get a real step by step explanation of how it all works, and consequently travel for close to nothing! (biggerpockets.com)