Use this widget to remove the last ROI that was added to the ROI manager. If the ROI manager only allows a single Region, then this will effectively remove the Region. If the ROI manager allows multiple Regions, then this will remove only the last one.

Use this widget to remove the last ROI that was added to the ROI manager. If the ROI manager only allows a single Region, then this will effectively remove the Region. If the ROI manager allows multiple Regions, then this will remove only the last one.