[gjadi]

I do it regularly but it's always invisible if all you see is the resulting code.

I do it to structure my code, but I remove the comments as I implement it because I try to make it obvious in the code what's being done. You know, regular good programming, pick good names, keep the code reasonably short, add comments when needed, etc.

The same way you won't see the detailed outline of a writing once it has been written. Yet, the author likely started with an outline.