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Welcome to Copilot in Word - Microsoft Support
For users with a Microsoft 365 Copilot license, the Reference a file button allows you to search for and include up to three of your existing files as inputs to ground the content Copilot drafts.
Update the data in an existing chart - Microsoft Support
Update the data in an existing chart. If you need to change data in a chart, you can do it from its source. Try it! Changes you make will instantly show up in the chart. Right-click the item you …
Learn about file formats - Microsoft Support
Learn about the various file formats that are supported in Microsoft 365 including .docx, .xlsx, .pptx, and OpenDocument format.