XmListSetBottomPos makes the item at the specified position the last visible item in the List.
widget Specifies the ID of the List widget.
position Specifies the position of the item to be made the last visible item in the list. A value of 1
indicates that the first item in the list is the last visible item; a value of 2 indicates that
the second item is the last visible item; and so on. A value of 0 (zero) indicates that the
last item in the list is the last visible item.
For a complete definition of List and its associated resources, see XmList(3).