This class displays a legend box (TPaveText) containing several legend entries.
virtual void Draw(Option_t *option="")
Draw this legend with its current attributes.
THist< 1, float, THistStatContent, THistStatUncertainty > TH1F
TLegendEntry * AddEntry(const TObject *obj, const char *label="", Option_t *option="lpf")
Add a new entry to this legend.