To design a form with IBM® Informix® 4GL, you organize labels and fields in the SCREEN section of a .per form file. Genero Business Development Language introduced a new LAYOUT section to place form elements. The new LAYOUT section allows more sophisticated form design than SCREEN.
When writing new programs for GUI applications, you should use a LAYOUT section instead of SCREEN. However, the SCREEN section is still supported to be used to design TUI mode forms.
Figure 1. Form using a SCREEN section in TUI mode
Figure 2. Form using a LAYOUT section in GUI mode