What does this line mean in the NODE tutorial?

Question

Node.js

Hello! Explain to me a fool what this line means in the NODE tutorial (before it was said, they say, write js code to create a server, save it anywhere, and the question arose in about this context. In this line, as I understand it, we are already moving to the first steps in NODE)

Navigate to the directory where the saved file is located and enter the following command to launch the applications

Thanks a lot to everyone who helps!
Ps - To my surprise, after a whole hour of searching on Russian and English forums, after watching English lessons, all the programmers either did not explain anything, or explained as much as possible, but they had MacOs.

Answer 1

Probably speech about transition to a directory in the console? cd file_folder_name, then the command itself to run.