Window → New Window
The Window → New Window command opens a duplicate of the currently active document. This can be useful for reviewing different parts of a document at the same time. The contents of the two windows are identical: make an edit in one window and the changes appear simultaneously in the other window. Each window behaves like a regular document; switch back and forth between them using the taskbar or the Window menu or arrange them side-by-side on the screen.
There’s no real limit to the number of windows that can be opened for a given document. On opening the first new window for a document, Word labels the original document (in the title bar) as the name of the document followed by a colon followed by a 1 (i.e., Chapter 10:1). Word labels each consecutive new window :2, :3, and so on. Saving any of the open windows of a single document saves the document. Remember that no matter how many new windows are created using Window → New Window, you are still looking at only one document.
When running your monitor at a higher resolution (better than 800x600, say), the Window → Split command is usually more useful than the New Window command. The Split command is discussed later in this chapter.
One great advantage to using more than one window for a document is being able to look at the document in different views. For example, you could view a document in Normal view in one window and in Web view in another. Edits made ...