Create ROI
Create ROI creates a region of interest map from the vertices within or outside a border. Currently, one can only create an ROI map containing a single region of interest.

In Border Mode, select ROI from the pulldown displayed at the left bottom of the Toolbar. Create ROI is only active on surface structures in Montage, All, or Surface views. (wb_command also has operations for creating ROIs both on the surface and in volumes).