Try to keep your documents small when you work in Word 2010. When the time comes to create a large Word document, such as a multichapter book or an extremely long paper (more than about 100 pages), you can take advantage of Word’s large-document features. Organize your large projects by creating smaller documents, and then chain the documents together by using Word’s Master Document feature.

If you start out with a humongous document, you need to split that document up into smaller documents. Then, after you work on those smaller documents, you put them all back together.


Select half the document, the portion you want to split into a new document.

Or, if you’re splitting a document into several pieces, select the first chunk you want to plop into a new document.


Cut the selected block.

You can cut text in a number of ways. For example, press Ctrl+X.


Summon a new, blank document.

Ctrl+N does the trick.


Paste in the portion of the first document you cut in Step 2.

You can press Ctrl+V to paste.


Save both documents.

You now have two (or more) documents where you started with one.

After working on your smaller documents, create a big, whopping document (a master document) out of several smaller documents.


Start a new, blank document in Word.

Press Ctrl+N to quickly summon a new, blank document.


Save the document.

Yeah, you haven’t yet written anything. Don’t worry: By saving now, you get ahead of the game and avoid some weird error messages.


Switch to Outline view.

Choose the Outline View button from the status bar to quickly get to Outline view.


On the Outlining tab in the Master Document group, click the Show Document button.

By clicking the Show Document button, you open up more choices in the Master Document group. One of those choices is the Insert button, used to build the master document.


Click the Insert button.

The Insert Subdocument dialog box opens.


In the Insert Subdocument dialog box, hunt down the first document that you want to insert into the master document.

The documents must be inserted in order.


Click the Open button to stick the document into the master document.

The document appears in the window, but it’s ugly because Outline view is active. Don’t worry: It won’t print out ugly! Word has set itself up for you to insert the next document:


If a prompt appears, asking a question about conflicting styles, click the Yes to All button.

This step keeps all subdocument styles consistent with the master document.


Repeat Steps 10 through 13 to build the master document.

Go through this process until you've added all the smaller documents you want.


Save the master document when you’re done.

At this point, the master document is created. You can edit the headers and footers, create a table of contents, and work on other items that affect the entire document.

Editing a document included in the master document automatically updates the master document. So, if you need to brush up Chapter 3 in your novel, you don’t need to worry about reinserting it into the master document.