-void start_progress(struct progress *progress, const char *msg, unsigned total);
-void stop_progress(struct progress *progress);
+struct progress *start_progress(const char *title, unsigned total);
+struct progress *start_progress_delay(const char *title, unsigned total,
+ unsigned percent_treshold, unsigned delay);
+void stop_progress(struct progress **progress);
+void stop_progress_msg(struct progress **progress, const char *msg);