+void psppire_window_minimise_all (void);
+
+void psppire_window_set_unsaved (PsppireWindow *);
+
+gboolean psppire_window_get_unsaved (PsppireWindow *);
+
+gint psppire_window_query_save (PsppireWindow *);
+
+void psppire_window_save (PsppireWindow *w);
+gboolean psppire_window_load (PsppireWindow *w, const gchar *file);
+