The Area Selection CellArray consists of the following columns: Row #. A unique row number is assigned to each region contained within an image pair (this includes inclusion and exclusion areas). By default, each image pair has at least one region associated with it. The default region is an inclusion region, and it encompasses the entire overlap area defined by the left and right images comprising the image pair, reduced by the percentage, if any, in the Trim the DTM Border by field. You can interactively select a cell within the Row # column to select a region. Likewise, if a region is selected within the Main View, the Row # corresponding to the region is selected and highlighted. Once a Row # has been selected, you can use the CellArray Row Selection menu to Sort, Goto, and Search based on criteria you specify. More than one region can be selected at any given time by Shift-clicking on regions.