[XmlArrayAttribute]
[XmlArrayItemAttribute(Type = typeof(NPC))]
[XmlArrayItemAttribute(Type = typeof(Living))]
[XmlArrayItemAttribute(Type = typeof(Sign))]
[XmlArrayItemAttribute(Type = typeof(Item))]
[XmlArrayItemAttribute(Type = typeof(LightSource))]
[XmlArrayItemAttribute(Type = typeof(BulletinBoard))]
[XmlArrayItemAttribute(Type = typeof(Thing))]
[HelpAttribute("List of things in the room.  No items should be defined in a room file.  Only descriptive things and things that can not be moved, like signs, bulletin boards, or lights.")]
public virtual List<Thing> Things { get; set; }