EachListItem
void EachListItem(void (*func)(Item*, Param1), Param1 p1)
::EachListItem(this, func, p1);
void EachListItem(void (*func)(Item*, Param1, Param2, Param3), Param1 p1, Param2 p2, Param3 p3)
::EachListItem(this, func, p1, p2, p3);
fSelectionList->EachListItem(CopyPoseOneAsEntry, entriesToTrash,
CurrentPoseList()->EachListItem(AddIfPoseSelected, fSelectionList);