-to represent a list zipper where the break is at position 3, and the element occupying that position is 40. For a list zipper, this is implemented using the pairs-of-lists structure described above.
+would represent a list zipper where the break is at position 3, and the element occupying that position is `40`. For a list zipper, this could be implemented using the pairs-of-lists structure described above.
+
+Alternatively, we could present it in a form more like we used in the seminar for tree zippers:
+
+ in_focus = 40, context = (before = [30; 20; 10], after = [50; 60; 70; 80; 90])