It is often helpful to see certain regions of interests (ROIs) during proofreading. A ROI can be a biologically defined compartment or just a user-defined region for proofreading focus. ROIs are stored in DVID as a native ROI data type called roi. We can add a ROI name into the database settings to display it in the 2D view.

Specify a ROI for display
ROI displayed with green outline