--- /dev/null
+# -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+"""
+Celery waiter.
+
+Takes orders for files generated by async Celery tasks.
+Serves the file when ready. Kindly asks the user to wait if not.
+
+Author: Radek Czajka <radoslaw.czajka@nowoczesnapolska.org.pl>
+"""