Toc::iterator it = change_list.item(0, author);
if (it == change_list.end()) {
change_list.push_back(TocItem(dit, 0, author));
Toc::iterator it = change_list.item(0, author);
if (it == change_list.end()) {
change_list.push_back(TocItem(dit, 0, author));