\ print the current stack using .s \ for example: 1 2 .s \ --> <2> 1 2 ok \ it lists the number of items on the stack in angle \ brackets, followed by the content of the stack, and then \ ok \ print the top element of the stack 1 2 3 . \ --> 3 ok 1 2 3 . . . \ --> 1 2 3 . . . 3 2 1 ok
