-define('NOTIFY_INTRO', 1);
-define('NOTIFY_CONFIRM', 2);
-define('NOTIFY_WALL', 4);
-define('NOTIFY_COMMENT', 8);
-define('NOTIFY_MAIL', 16);
-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('SYSTEM_EMAIL', 16384);
-
-define('NOTIFY_SYSTEM', 32768);
-/* @}*/
-
-
-/**
- * @name Term
- *
- * Tag/term types
- * @{
- */
-define('TERM_UNKNOWN', 0);
-define('TERM_HASHTAG', 1);
-define('TERM_MENTION', 2);
-define('TERM_CATEGORY', 3);
-define('TERM_PCATEGORY', 4);
-define('TERM_FILE', 5);
-define('TERM_SAVEDSEARCH', 6);
-define('TERM_CONVERSATION', 7);
-
-define('TERM_OBJ_POST', 1);
-define('TERM_OBJ_PHOTO', 2);
-
-/**
- * @name Namespaces
- *
- * Various namespaces we may need to parse
- * @{
- */
-define('NAMESPACE_ZOT', 'http://purl.org/zot');
-define('NAMESPACE_DFRN', 'http://purl.org/macgirvin/dfrn/1.0');
-define('NAMESPACE_THREAD', 'http://purl.org/syndication/thread/1.0');
-define('NAMESPACE_TOMB', 'http://purl.org/atompub/tombstones/1.0');
-define('NAMESPACE_ACTIVITY', 'http://activitystrea.ms/spec/1.0/');
-define('NAMESPACE_ACTIVITY_SCHEMA', 'http://activitystrea.ms/schema/1.0/');
-define('NAMESPACE_MEDIA', 'http://purl.org/syndication/atommedia');
-define('NAMESPACE_SALMON_ME', 'http://salmon-protocol.org/ns/magic-env');
-define('NAMESPACE_OSTATUSSUB', 'http://ostatus.org/schema/1.0/subscribe');
-define('NAMESPACE_GEORSS', 'http://www.georss.org/georss');
-define('NAMESPACE_POCO', 'http://portablecontacts.net/spec/1.0');
-define('NAMESPACE_FEED', 'http://schemas.google.com/g/2010#updates-from');
-define('NAMESPACE_OSTATUS', 'http://ostatus.org/schema/1.0');
-define('NAMESPACE_STATUSNET', 'http://status.net/schema/api/1/');
-define('NAMESPACE_ATOM1', 'http://www.w3.org/2005/Atom');
-define('NAMESPACE_MASTODON', 'http://mastodon.social/schema/1.0');
-/* @}*/
-
-/**
- * @name Activity
- *
- * Activity stream defines
- * @{
- */
-define('ACTIVITY_LIKE', NAMESPACE_ACTIVITY_SCHEMA . 'like');
-define('ACTIVITY_DISLIKE', NAMESPACE_DFRN . '/dislike');
-define('ACTIVITY_ATTEND', NAMESPACE_ZOT . '/activity/attendyes');
-define('ACTIVITY_ATTENDNO', NAMESPACE_ZOT . '/activity/attendno');
-define('ACTIVITY_ATTENDMAYBE', NAMESPACE_ZOT . '/activity/attendmaybe');
-
-define('ACTIVITY_OBJ_HEART', NAMESPACE_DFRN . '/heart');
-
-define('ACTIVITY_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'make-friend');
-define('ACTIVITY_REQ_FRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'request-friend');
-define('ACTIVITY_UNFRIEND', NAMESPACE_ACTIVITY_SCHEMA . 'remove-friend');
-define('ACTIVITY_FOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'follow');
-define('ACTIVITY_UNFOLLOW', NAMESPACE_ACTIVITY_SCHEMA . 'stop-following');
-define('ACTIVITY_JOIN', NAMESPACE_ACTIVITY_SCHEMA . 'join');
-
-define('ACTIVITY_POST', NAMESPACE_ACTIVITY_SCHEMA . 'post');
-define('ACTIVITY_UPDATE', NAMESPACE_ACTIVITY_SCHEMA . 'update');
-define('ACTIVITY_TAG', NAMESPACE_ACTIVITY_SCHEMA . 'tag');
-define('ACTIVITY_FAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'favorite');
-define('ACTIVITY_UNFAVORITE', NAMESPACE_ACTIVITY_SCHEMA . 'unfavorite');
-define('ACTIVITY_SHARE', NAMESPACE_ACTIVITY_SCHEMA . 'share');
-define('ACTIVITY_DELETE', NAMESPACE_ACTIVITY_SCHEMA . 'delete');
-
-define('ACTIVITY_POKE', NAMESPACE_ZOT . '/activity/poke');
-
-define('ACTIVITY_OBJ_BOOKMARK', NAMESPACE_ACTIVITY_SCHEMA . 'bookmark');
-define('ACTIVITY_OBJ_COMMENT', NAMESPACE_ACTIVITY_SCHEMA . 'comment');
-define('ACTIVITY_OBJ_NOTE', NAMESPACE_ACTIVITY_SCHEMA . 'note');
-define('ACTIVITY_OBJ_PERSON', NAMESPACE_ACTIVITY_SCHEMA . 'person');
-define('ACTIVITY_OBJ_IMAGE', NAMESPACE_ACTIVITY_SCHEMA . 'image');
-define('ACTIVITY_OBJ_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'photo');
-define('ACTIVITY_OBJ_VIDEO', NAMESPACE_ACTIVITY_SCHEMA . 'video');
-define('ACTIVITY_OBJ_P_PHOTO', NAMESPACE_ACTIVITY_SCHEMA . 'profile-photo');
-define('ACTIVITY_OBJ_ALBUM', NAMESPACE_ACTIVITY_SCHEMA . 'photo-album');
-define('ACTIVITY_OBJ_EVENT', NAMESPACE_ACTIVITY_SCHEMA . 'event');
-define('ACTIVITY_OBJ_GROUP', NAMESPACE_ACTIVITY_SCHEMA . 'group');
-define('ACTIVITY_OBJ_TAGTERM', NAMESPACE_DFRN . '/tagterm');
-define('ACTIVITY_OBJ_PROFILE', NAMESPACE_DFRN . '/profile');
-define('ACTIVITY_OBJ_QUESTION', 'http://activityschema.org/object/question');
+/** @deprecated since 2020.03, use Notify\Type::INTRO instead */
+define('NOTIFY_INTRO', Notify\Type::INTRO);
+/** @deprecated since 2020.03, use Notify\Type::CONFIRM instead */
+define('NOTIFY_CONFIRM', Notify\Type::CONFIRM);
+/** @deprecated since 2020.03, use Notify\Type::WALL instead */
+define('NOTIFY_WALL', Notify\Type::WALL);
+/** @deprecated since 2020.03, use Notify\Type::COMMENT instead */
+define('NOTIFY_COMMENT', Notify\Type::COMMENT);
+/** @deprecated since 2020.03, use Notify\Type::MAIL instead */
+define('NOTIFY_MAIL', Notify\Type::MAIL);
+/** @deprecated since 2020.03, use Notify\Type::SUGGEST instead */
+define('NOTIFY_SUGGEST', Notify\Type::SUGGEST);
+/** @deprecated since 2020.03, use Notify\Type::PROFILE instead */
+define('NOTIFY_PROFILE', Notify\Type::PROFILE);
+/** @deprecated since 2020.03, use Notify\Type::TAG_SELF instead */
+define('NOTIFY_TAGSELF', Notify\Type::TAG_SELF);
+/** @deprecated since 2020.03, use Notify\Type::TAG_SHARE instead */
+define('NOTIFY_TAGSHARE', Notify\Type::TAG_SHARE);
+/** @deprecated since 2020.03, use Notify\Type::POKE instead */
+define('NOTIFY_POKE', Notify\Type::POKE);
+/** @deprecated since 2020.03, use Notify\Type::SHARE instead */
+define('NOTIFY_SHARE', Notify\Type::SHARE);
+
+/** @deprecated since 2020.12, use Notify\Type::SYSTEM instead */
+define('NOTIFY_SYSTEM', Notify\Type::SYSTEM);