Form calls the user edit routine with the type parameter equal
to U_INITIALIZE after the form has performed all of its initialization
but before any forms are displayed on the screen. The user edit routine is called
only once with the type parameter set to U_INITIALIZE. The rest
of the user_edit parameters are NULL. The U_INITIALIZE
call allows the routine to perform whatever initialization it requires such
as opening files. If the user edit routine returns an error message, it is displayed
on the screen and form exits immediately with an exit code of 1.