So as we write our code we know exactly what we want it to do and what we expect it to do. Sometimes that can even seem obvious, but due to the nature of code and the fact there can be many ways to get something done it’s great practice to write pseudo code (essentially comments) along with our code to explain to anyone else looking at it what our intent was.
Of course that’s a simple example, but this can be helpful as a reminder to yourself as well so even if it’s your solo project it is a good idea to utilize this.