diff --git a/ImageGrid.otl b/ImageGrid.otl
index 8c39ce1d..fa522e10 100755
--- a/ImageGrid.otl
+++ b/ImageGrid.otl
@@ -26,8 +26,25 @@ Concepts
 		workflow
 		| a named sequence/graph of states and transitions (actions)
 	structural
-		store
 		URL
+		index
+		| contains:
+			metadata
+			item data
+				GID
+				metadata
+				GIDs of available local sub-items (thumbs, previews, ...)
+				GIDs of available remote sub-items (thumbs, previews, ...)
+				URLs (optional)
+				| URLs are only local...
+					store
+					cache
+		cache
+		store
+		clone/remote (???)
+
+
+
 
 structure
 	configuration (archive-wide)
@@ -37,8 +54,12 @@ structure
 		remote refs
 		clone settings
 	index (metadata)
+	version info
 	data
 
+
+
+
 requirements
 	index external data (represented by URLs and groups of URLs)
 		indexing is done via tags (metadata)
diff --git a/index.py b/index.py
index 37b671c7..147b80c2 100755
--- a/index.py
+++ b/index.py
@@ -1,7 +1,7 @@
 #=======================================================================
 
 __version__ = '''0.0.01'''
-__sub_version__ = '''20111111161334'''
+__sub_version__ = '''20111204203122'''
 __copyright__ = '''(c) Alex A. Naanou 2011'''
 
 
@@ -164,7 +164,7 @@ def split_images(index):
 
 	Groups are split to contain one raw each.
 
-	Each image will be grouped to the raw that containse the ragest 
+	Each image will be grouped to the raw that contains the largest 
 	matching sub-path, starting from root.
 
 	Resulting groups will have a gid as it's key