/* Formats a value according to FORMAT
The returned string must be freed when no longer required */
-gchar * value_to_text (union value v, PsppireDict *dict, struct fmt_spec format);
+gchar * value_to_text (union value v, const PsppireDict *dict, struct fmt_spec format);
gboolean text_to_value (const gchar *text, union value *v,
+ const PsppireDict *dict,
struct fmt_spec format);
GObject *get_object_assert (GtkBuilder *builder, const gchar *name, GType type);