-This is the BD style wall.
+This is a BD style wall. It cannot be moved and cannot be passed by the player,
+but explosion will destroy it.
-Unlike most other walls, falling objects slip off this wall,
-although it does not look rounded or crumbled.
-
-It can be destroyed by explosions.
+Even though it may not look like that, objects that can fall will slip off this
+wall to the left or to the right.