LAYOUT
 GRID
  
    {
      <Tree tree                                       >
       [f1      ][n                         ]
       [f1      ][n                         ]
       [f1      ][n                         ]
       [f1      ][n                         ]
       [f1      ][n                         ]
       }
       END
      ATTRIBUTES
      f1 = formonly.ano;
      n  = formonly.nombre_vend;
      
PHANTOM FORMONLY.parentId;
PHANTOM FORMONLY.id;
PHANTOM FORMONLY.hasChildren;

TREE tree: 
    IMAGEEXPANDED  = "open", 
    IMAGECOLLAPSED = "folder",
    IMAGELEAF      = "file",
    ISNODECOLUMN   = hasChildren;

INSTRUCTIONS
  SCREEN RECORD sdatos (ano,nombre_vend, parentid,id,haschildren)