#include <DpListsItem_DpListType.h>
NAME: DpListsItem - non-public list items in to be used by class "DpLists"
DESCRIPTION:
Each object in a list is represented in terms of a list item object. This is a standard construction of lists, see for example Lippman''s C++ Primer. Class "DpListsItem" has no interest outside the private parts of class "DpLists". Each list item consists of a "DpList" object that is appended to class "DpLists".