SCREEN versus LAYOUT section

When writing new programs for GUI applications, it is recommended that you use a LAYOUT section instead of SCREEN. However, the SCREEN section is still supported to be used to design TUI mode forms.

To design a form with IBM® Informix® 4GL (I4GL), you organize labels and fields in the SCREEN section of a .per form file. Genero Business Development Language introduced a new LAYOUT section to hold form elements. The new LAYOUT section allows for a more sophisticated form design than the SCREEN section.