. 2 is executed; FIGS. 6-1 to 6-4 show diagrams of sub-menues and documents which are being created which are displayed on the screen when the document as shown in FIG. 2 is created, in which FIGS. 6-1 and 6-2 are diagrams showing examples of sub-menues for grid definition and documents in which the defined grids are displayed, FIG. 6-3 is a diagram of a form library showing a registered form and