 The Cretail monadic verb. It's a monadic verb with infinite rank that returns a list with the last item of its argument removed. But what exactly does this mean? Well, monadic verbs have one argument. That is, in fact, what makes them monadic. Infinite rank verbs look at the whole of that argument and Cretail returns a list with the last item removed. Now let's take a look at a few examples. Let's begin by looking at a rank three array. In this case we've got shape 224 and it's made up of two items which are two by four tables. Cretail is going to remove that last item and that'll leave us with a shape of 124 and that's exactly the result we end up with. Moving on to rank two arrays, and this is a literal array, we have shape 34 and we have three rows which are the items. We're going to strip off that last item that'll change the shape to 24 and that is the result that we're going to end up with. Looking at atoms, atoms are a little bit different and the reason is they have an empty shape and they have only one item and that's the atom itself. So if we take off the last item and there's only one item we're going to end up with an empty list and that list is going to have length zero. So we're going to go from having a shape of an empty which is an atom to a shape which is zero and that's the result that we're going to end up with if we apply Cretail to an atom.