diff --git a/1-js/05-data-types/04-array/article.md b/1-js/05-data-types/04-array/article.md
index 22c5c02c..7dc54bd4 100644
--- a/1-js/05-data-types/04-array/article.md
+++ b/1-js/05-data-types/04-array/article.md
@@ -394,7 +394,7 @@ let matrix = [
   [7, 8, 9]
 ];
 
-alert( matrix[1][1] ); // the central element
+alert( matrix[1][1] ); // 5, the central element
 ```
 
 ## toString
diff --git a/figures.sketch b/figures.sketch
index f68d360a..8c08d67b 100644
Binary files a/figures.sketch and b/figures.sketch differ