-define('NOTIFY_SUGGEST', 32);
-define('NOTIFY_PROFILE', 64);
-define('NOTIFY_TAGSELF', 128);
-define('NOTIFY_TAGSHARE', 256);
-define('NOTIFY_POKE', 512);
-define('NOTIFY_SHARE', 1024);
-
-define('NOTIFY_SYSTEM', 32768);
+/** @deprecated since 2020.03, use Notification\Type::INTRO instead */
+define('NOTIFY_INTRO', Notification\Type::INTRO);
+/** @deprecated since 2020.03, use Notification\Type::CONFIRM instead */
+define('NOTIFY_CONFIRM', Notification\Type::CONFIRM);
+/** @deprecated since 2020.03, use Notification\Type::WALL instead */
+define('NOTIFY_WALL', Notification\Type::WALL);
+/** @deprecated since 2020.03, use Notification\Type::COMMENT instead */
+define('NOTIFY_COMMENT', Notification\Type::COMMENT);
+/** @deprecated since 2020.03, use Notification\Type::MAIL instead */
+define('NOTIFY_MAIL', Notification\Type::MAIL);
+/** @deprecated since 2020.03, use Notification\Type::SUGGEST instead */
+define('NOTIFY_SUGGEST', Notification\Type::SUGGEST);
+/** @deprecated since 2020.03, use Notification\Type::PROFILE instead */
+define('NOTIFY_PROFILE', Notification\Type::PROFILE);
+/** @deprecated since 2020.03, use Notification\Type::TAG_SELF instead */
+define('NOTIFY_TAGSELF', Notification\Type::TAG_SELF);
+/** @deprecated since 2020.03, use Notification\Type::TAG_SHARE instead */
+define('NOTIFY_TAGSHARE', Notification\Type::TAG_SHARE);
+/** @deprecated since 2020.03, use Notification\Type::POKE instead */
+define('NOTIFY_POKE', Notification\Type::POKE);
+/** @deprecated since 2020.03, use Notification\Type::SHARE instead */
+define('NOTIFY_SHARE', Notification\Type::SHARE);
+
+/** @deprecated since 2020.12, use Notification\Type::SYSTEM instead */
+define('NOTIFY_SYSTEM', Notification\Type::SYSTEM);