From b01f748df4aae3a75d0d4ff3709bac63848517c7 Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Wed, 29 Feb 2012 03:03:54 +0400
Subject: [PATCH] minor changes...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 ImageGrid.otl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ImageGrid.otl b/ImageGrid.otl
index cdcbf500..d28407d2 100755
--- a/ImageGrid.otl
+++ b/ImageGrid.otl
@@ -1,5 +1,10 @@
 Concepts
 	basic
+		key
+		| a basic global identification mechanism.
+		| each entity in the system has a key.
+		|
+		| NOTE: a good key should be uniquely calculable from an entity.
 		item
 		| a basic element in the system.
 		| an item is represented by a URL