I'm using Windows - where does combinator.exe write out to?

So if I use combinator.exe to combine File1 and File2 wordlists ... can I get it to write to a third file?  Because I have no idea where the information is going.  It's appearing by on screen scrolling rather fast, but there's no realistic way to copy it from a fake, Windows-based DOS window (especially since it only displays the most recent 500 or so lines).