Fnd_Pref_SetBoolean

            Fnd_Pref_SetBoolean (name; value {; scope})

              Parameter                Type               Description
              name                     Text               Name of the preference item
              value                    Boolean            The new preference value
              scope                    Longint            The preference’s scope (optional)

            This routine stores a Boolean value.
              Fnd_Pref_SetBoolean ("Toolbar";$displayToolbar_b)

            If no scope is specified, the preference is stored as a local preference. Pass a third parameter to specify the
            scope of the preference:
              Fnd_Pref_SetBoolean ("Toolbar";$displayToolbar_b;Fnd_Pref_Shared )

            A preference’s scope should not be changed. Doing so may cause unpredictable results.