word2013 How to open multiple documents in the same window

　　 word2013 The following steps to open multiple documents in the same window:

Step one: Open the Word document, open two documents, and find that the name is really different, is two files.

Step two: Find the rearrangement window in the view, click on the triangle, and find three rearrange styles.

Step three: The first style, tile horizontally, the more documents, will only increase horizontally.

Step four: The second style, tile vertically, the more documents, the more vertical documents.

Step five: The third style, Cascade, the document will only be stacked together to display.