HepMC3 event record library: include Directory Reference

HepMC3 event record library

include Directory Reference
Directory dependency graph for include:

## Files
| AnalysisExample.h
| Definition of class AnalysisExample, which implements a toy physics analysis.
| WriterDOT.h
| Definition of class WriterDOT converter of GenEvent into .dot format.
| WriterHEPEVTZEUS.h
| Definition of class WriterHEPEVTZEUS.
| WriterRootTreeOPAL.h
| Definition of class WriterRootTreeOPAL.