Microsoft today released a new build for Office Insiders enrolled in Slow ring for Windows 10 and Windows 10 Mobile devices. This 17.8326 build is a preview of the July 2017 feature update and it includes the following three new features for Word app.
Edit with natural pen gestures:
You can now use natural pen gestures like circling to select, crossing out to delete, use the highlighter pen to highlight text for real while editing Word documents.
Copy and Paste formatting:
You can now copy and paste formatting, not just text, in your documents.
You can now set custom margins in your document to be just the way you like them. To set your own margins, select Custom Margins from the drop-down list and specify the Top, Left, Right, and Bottom margins measurements.
If you are part of Office Insider program, you will receive this update soon.