For documentation purposes e.g. producing this manual, the -dform and -dmenu options enables optional saving of form and menu graphics to PostScript files. This will not normally be used.
When -dform or -dmenu has been specified it is possible to click within a form or a menu, but outside button and other active areas. FIT2D then prompts for the name of a file to save the PostScript graphics within. This file will be written with the instructions to draw the form or the menu.
Since forms also contain menus, it is necessary to use the -dform option without the -dmenu option to be able to save the graphics of the whole form.