LWHistControls Node1 LWHistControls + cleanupOnGetROOT() + setCleanupOnGetROOT() + hasROOTBackend() + setROOTBackend() + getTotalPoolMemAllocated() + getTotalPoolMemUsed() + getMemUnusedButAllocated InPools() + poolWasteFraction() + releaseAllHeldMemory() - LWHistControls() - ~LWHistControls()