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Apply sensitivity labels to your files and email - Microsoft Support
The sensitivity bar makes it easy for you to see what label is applied to your file, and to apply or change a label whenever you need to, including when saving the file. Just select the sensitivity bar in the save dialog to see the labeling options for this file.
Create a summary of your document with Copilot in Word
Copilot can generate summaries when you share an unencrypted document with collaborators. Encrypted documents aren't supported at this time. In an existing Word document, select Share, then in the list, select Share. Select the Copilot icon inside the Add a message box.