It's possible in Word 2016 to open one document inside another. Doing so isn't as odd as you'd think. For example, you may have your biography, résumé, or curriculum vitae document and want to add that information to the end of a letter begging for a new job. If so, or in any other circumstances, follow these steps:
Position the insertion pointer where you want the other document's text to appear.
The text is inserted at that spot.
Click the Insert tab.
From the Text group, click the Object button.
The Object button is shown in the margin. After clicking the button, you see a menu.
Choose the menu item Text from File.
The Insert File dialog box appears. It's similar to the Open dialog box.
Locate and select the document you want to insert.
Browse through the various folders to find the document icon. Click to select that icon.
Click the Insert button.
The document's text is inserted into the current document, just as if you had typed and formatted it yourself.
The resulting combined document still has the same name as the first document; the document you inserted remains unchanged.
You can insert any number of documents into another document, one at a time. There's no limit.
Inserting text from one document into another is often called boilerplating. For example, you can save a commonly used piece of text in a document and then insert it into other documents as necessary. This process is also the way that sleazy romance novels are written.
Biography. Résumé. Curriculum vitae. The more important you think you are, the more alien the language used to describe what you've done.