Insignificant= Can be set to 'yes' or 'no'. This defaults to 'no' for all objects as setting it to 'yes' means that the object is not counted for scoring and kills purposes when destroyed and therefore will not be included in the logic which accumulates scoring for objects improving with veterancy. Setting this to 'yes' on a player-owned unit has been known to cause issues if that unit also has a BuildLimit= set, where that limit can be exceeded.