Reshape Polygon - Click this icon to reshape a selected polygon by adjusting individual vertices. You can add a vertex by middleclicking on the polygon in between vertices. To delete a vertex, Shiftmiddle click the vertex.
Display Selected Region Properties - To use this icon, first select a region in the Area Selection tab, then click the icon. The Region Properties dialog, as shown in Figure 25, opens. It provides X and Y coordinate information for each vertex in the polygon. The X and Y coordinates are in pixel units.