A: Yes. This feature was implemented in ioGAS version 4.4. The Grid menu option (Accessed from Map>Grid or Display Grid Options in the RHS toolbar when a grid is already opened) has a new check box the bottom of the window (Extend grid by search radius). When this check box is ticked, the gridding routine will add extra cells around the existing boundary of the grid. The number of cells is defined in the Search Radius drop down menu in the Grid Option window (Search Radius (Cells)).