diff --git a/lark b/lark
index 974c3e8..4b05ce7 100755
--- a/lark
+++ b/lark
@@ -1,35 +1,8 @@
 #!/usr/bin/python3
 """
 lark
-Verify and sort game ROM images.
-
-Intended features:
-    DAT downloading
-    File validation
-    File renaming/moving
-    Nice Beets-inspired UI.
-    Release grouping (maybe, this might require another large external database)
-
-UI notes
-
-# Key terms
-    - hash          Unique identifier for each ROM release.
-    - release         ROM release, ripped from physical media.
-    - dat           List of hashes, with associated filenames.
-    - platform      The original hardware on which the image was intended to run.
-
-# Verbs
-    - list [hash, dat, platform, image]
-        List items in the database.
 
-    - import [datfile, imagefile]
-        Process and add external items to the database.
-
-    - add [platform, hash]
-        Manually add items to the database.
-
-    - remove [hash, dat, platform]
-        Delete items from the database.
+Verify and sort game ROM images.
 """
 # TODO: Write decent UI
 import hashlib
@@ -166,8 +139,7 @@ elif action_object == 'release-group':
 elif action_object == 'release':
     if action == 'add':
         properties = _kwargs_parse(sys.argv[3:])
-        release = metadata.Release(filename=properties['filename'],
-                                 sha1sum=properties['sha1sum'])
+        release = metadata.Release(**properties)
 
         with metadata.get_db_session() as session:
             if properties['release-group']:
@@ -179,7 +151,7 @@ elif action_object == 'release':
     if action == 'list':
         # TODO: Filter support is exclusively limited to SQLAlchemy's filter.ilike function. Figure
         # out a good way to include other filters.
-        print('Listing release groups.')
+        print('Listing releases.')
         filters = _kwargs_parse(sys.argv[3:])
         with metadata.get_db_session() as session:
             print(metadata.search(session, metadata.Release, **filters))
diff --git a/metadata.md b/metadata.md
index d598c54..8f2c714 100644
--- a/metadata.md
+++ b/metadata.md
@@ -4,10 +4,12 @@
 
     * UUID
     * sha1sum
-    * filename
+    * format (For now this is just the file extension)
+    * region
+    * version
+    * disambiguation
     * release group
 
-
 ## Release group
 - A container for all versions of a release.
   For example, the Star Fox 64 release group would contain:
diff --git a/metadata.py b/metadata.py
index 4328e9f..3ff9efe 100644
--- a/metadata.py
+++ b/metadata.py
@@ -35,15 +35,20 @@ class Release(_SQLBase):
                            primary_key=True)
     uuid = sqlalchemy.Column(sqlalchemy.String, nullable=False, default=_uuidgen)
     sha1sum = sqlalchemy.Column(sqlalchemy.String, unique=True, nullable=False)
-    filename = sqlalchemy.Column(sqlalchemy.String, unique=True, nullable=False)
+    format = sqlalchemy.Column(sqlalchemy.String, nullable=False)
+    region = sqlalchemy.Column(sqlalchemy.String)
+    version = sqlalchemy.Column(sqlalchemy.String, nullable=False)
+    disambiguation = sqlalchemy.Column(sqlalchemy.String)
     release_group_id = sqlalchemy.Column(sqlalchemy.Integer,
                                          sqlalchemy.ForeignKey('release_groups.id'))
 
     release_group = sqlalchemy.orm.relationship('ReleaseGroup', back_populates='releases')
 
     def __repr__(self):
-        return 'ROM Image: id: %s, uuid: %s, sha1sum: %s, filename: %s, release-group: %s' % (
-            self.id, self.uuid, self.sha1sum, self.filename, self.release_group.name)
+        return ('ROM Image: id: %s, uuid: %s, sha1sum: %s, release-group: %s, region: %s, '
+                'version: %s, disambiguation: %s' % (
+                    self.id, self.uuid, self.sha1sum, self.release_group.name, self.region,
+                    self.version, self.disambiguation))
 
 class ReleaseGroup(_SQLBase):
     '''SQLAlchemy ORM class for release group metadata.'''