How to Open One Document Inside Another in Word 2013
Click the Insert button.
The document you selected is inserted into the current document, just as though you had typed (and formatted) the whole thing right there with your stubby little fingers.
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.