auto

assign3.md

@@ -202,7 +202,7 @@ each button.
 The view controller's `updateViewFromGame()` method is now quite short. It has
 to:
 - add `ButtonTile`s to the board if the model has a previously-unseen `Tile`.
-- remove `ButtonTile`s from the board if a previously-unseen `Tile` no longer
+- remove `ButtonTile`s from the board if a previously-seen `Tile` no longer
   exists. 
 - ensure that all remaining `ButtonTile`s have accurate row/col information.
 - update the score