Threat window DynamicData values?

[Drumstix42]

Okay, can anyone enlighten me on this?:

eq2ui_mainhud_threat.xml (default file)

Name="TargetValue" DynamicData="/GameData.Target.Threat"
Name="TargetSecondaryValue" DynamicData="/GameData.Target.SecondaryThreat"
Name="ImpliedTargetValue" DynamicData="/GameData.ImpliedTarget.Threat"
Name="ImpliedSecondaryValue" DynamicData="/GameData.Target.SecondaryThreat"

I've had this small threat window mod in my "work-in-progress" folder, and I was wondering why my one of my values wasn't showing up. Is "/GameData.Implied.SecondaryThreat" not used for anything? why does it exist?