Interplotation?

> Perhaps a very simple question to many of you but I'm still a simpleton

> it comes to milling. I know that monitors interplotate the lines on the
> screen with a 2" or so gap between them, displaying two at once split

> And you see the lines on TV with the refresh rates being so different. But
> what exactly does it mean in milling? That the software / mill can put all
> the axes' together into a set of 3D dimensions? Or is it something to do
> with how it controls each axis relative to the others?
>
> Thanks,
> John
>
>