It's easy to use Split. Hit Ctrl+Alt+S to activate the function. (In Office 2007, you can also click on the View tab and then Split in the Windows group.) Once the feature is active, it will split your screen in half, allowing two separate independent navigation windows for the same document. This can be extremely helpful if you want to look at two different parts of a large document without having to leave either section.
Hitting Ctrl+Alt+S a second time (or clicking on the View tab then Remove Split in the Windows group) will turn off the split screen.
This function is also possible in older versions of Microsoft Word, but you will have to use the keyboard shortcut.
Check below for a screen shot of this feature in action.
