extern const int cResearchPlanBuildingID = 0;
extern const int cResearchPlanBuildingTypeID = 1;
extern const int cResearchPlanTechID = 2;
extern const int cResearchPlanBuildingAbstractTypeID = 3;
extern const int cResearchPlanDestroyWhenBuildingIsGone = 4;
extern const int cResearchPlanProtoUnitCommandID = 5;