It is explained in the next paragraph what "npx" is:
> Yep. cool? “npx” allows you to run a temporary package, which will be deleted right after each use. Use this command to try and experience how Fine works. Doesn’t hurt to try, huh?
> Yep. cool? “npx” allows you to run a temporary package, which will be deleted right after each use. Use this command to try and experience how Fine works. Doesn’t hurt to try, huh?
All it would really need to say is that it requires a recent version of Node.