Fw CS4 N-Up

Did you know that Fw CS4 can dock open files horizontally or vertically while in Application Frame mode? This feature was called “N-Up” in beta testing, but I can’t seem to find any documentation on what it’s called now. Check it out:

For the video impaired, just drag any document tab to the left, right, or bottom borders of the canvas and release to view that document alongside another open image.