https://root.cern.ch/doc/v622/classTLegendEntry.html
ROOT: TLegendEntry Class Reference
rootclassreference
https://root.cern.ch/doc/v632/classTLegendEntry.html
ROOT: TLegendEntry Class Reference
rootclassreference
https://root.cern.ch/doc/v614/classTLegendEntry.html
ROOT: TLegendEntry Class Reference
rootclassreference