Replacement Strings
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[%SystemName]          - Target System Name           
[%SectorName]          - Target Sector Name (Number)
[%SourceEmperorName]   - Source Emperor's Name (includes Title)
[%SourceEmpireName]    - Source Empire Name (includes Empire Type)
[%VehicleName]         - Vehicle Name
[%VehicleSize]         - Vehicle Size
[%PlanetName]          - Planet Name
[%DesignName]          - Design Name
[%TechName]            - Tech Area Name
[%TreatyName]          - Political Treaty
[%FacilityName]        - Facility Name
[%StarName]            - Star Name
[%WarpPointName]       - Warp Point Name
[%ActualAmount]        - Actual Effect Amount (Can't be used for Start Message)
