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Click on the Move, Pan, and Select Tool ( ) in the toolbar.
Click (or double-click) on the radius you want to update until you see it framed with a red dashed outline.
Move any endpoint (which display as red checkboxes) to a new position by dragging it as desired with your mouse cursor. The radius and circular area will update automatically.
Alternatively, you can manually set a radius value within the Mark Markup Detail window. Type in each unit and then double-click to complete.
Click SAVE MARKUPS at the top of the review page to confirm.
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