Modifying subdocuments
Rename a Subdocument
1. On the View menu, in the Document Views group, click the Outline button.
![Document Views in Word for Microsoft 365 Document Views in Word 365](/images/tips/word_button365/outline.png)
2. Press Ctrl and click the hyperlink of the subdocument that you want to rename:
![Hyperlink of the subdocument in Word for Microsoft 365 Hyperlink of the subdocument in Word 365](/images/tips/223_365/2.png)
Note: If you don't see hyperlinks, you need to click Collapse Subdocuments on the Outlining tab, in the Master Document group:
![Master Document group in Word for Microsoft 365 Master Document group in Word 365](/images/tips/223_365/1.png)
Then you click to the hyperlink of the subdocument with Ctrl, Word opens it in another window.
3. Save subdocument (see Saving documents for more details).
4. Close the subdocument.
Word closes the subdocument and changes the hyperlink of this subdocument.
Combine Subdocuments
1. On the View menu, in the Document Views group, click the Outline button.
2. Select the first subdocument that you want to combine by clicking its
subdocument icon :
![Selected subdocument in Word for Microsoft 365 Selected subdocument in Word 365](/images/tips/223_365/4.png)
3. Hold down Shift as you click the last subdocument icon in the group of subdocuments that you want to combine:
![Selected subdocuments in Word for Microsoft 365 Selected subdocuments in Word 365](/images/tips/223_365/5.png)
4. On the Outlining tab, in the Master Document group, click Merge Subdocument:
![Master Document group in Word for Microsoft 365 Master Document group in Word 365](/images/tips/223_365/3.png)
Note: When you save the master document, Microsoft Word saves the combined subdocuments with the file name of the first subdocument in the combination.
See also this tip in French: Comment modifier de sous-documents.