Vector indicating the geographic zone on which we want to cut the map. If BOXZOOM has : 1 element : The extraction is made on [lon1, lon2, lat1, lat2, 0.,boxzoom[0]] 2 elements: The extraction is made on [lon1, lon2, lat1, lat2, boxzoom[0],boxzoom[1]] 4 elements: The extraction is made on [Boxzoom, 0, max([gdept, gdepw])] 5 elements: The extraction is made on [Boxzoom[0:3], 0, Boxzoom[4]] 6 elements: The extraction is made on Boxzoom Where lon1, lon2,lat1,lat2 are global variables defined at the last domdef!