If you have multiple monitors, it is possible to drag a code window from the navigator to a separate monitor.
Place your cursor on the program tab, click and drag to the other monitor. As you move the window it will show a "No Entry" sign until you get off the Eclipse desktop and onto the other monitor. If you open another source member you can also drag that onto the other monitor and have them shown side by side, useful for comparison, or split screen.
This also works with any of the other boxes.