+time_t blerg_get_timestamp(struct blerg *blerg, int record);
+int blerg_set_subscription_mark(struct blerg *blerg);
+uint64_t blerg_get_subscription_mark(struct blerg *blerg);
+int blerg_set_mute(struct blerg *blerg, int v);
+int blerg_get_mute(struct blerg *blerg);