IF ( southEastCorner ) THEN
LOGICAL southEastCorner
southEastCorner = S_edge .AND. E_edge
southEastCorner = exch2_isEedge(myTile).EQ.1
southEastCorner = .TRUE.
& southWestCorner, southEastCorner
southEastCorner = southEastCorner .AND. iG.EQ.2
LOGICAL southWestCorner, southEastCorner