You really haven't a clue about how the software works and is intended to work.

Open a document on a system with an active HP printer and its on-screen layout may well differ from when you open the same document on a system with an active Epson printer. Indeed, just switching between a physical printer driver and Microsoft's built-in PDF 'printer' can result in on-screen layout changes. So, yes, in that respect the output does replicate the dots on screen. What changes is where those dots are.

Your car factory analogy is flawed. You should be thinking in terms of different production lines. One would hardly expect production lines for different models to output the same model, regardless of who the workers are...

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]