internal void Unpin_Numeral_System(Pinned_Item_Numeral_System_List Old_Item)
{
sbyte numeral_System_Code = Old_Item.Numeral_System_Code;
Pinned_Numeral_Systems.Remove_Numeral_System(numeral_System_Code);
Pinned_Items_List.Remove(Old_Item);
Reload_Item(Factory.Get_Item(numeral_System_Code));
On_Property_Change("Numeral_System_List_Items_List");
}
