| Offset | Variable name | Data type | Meaning |
| 1 | INSTATE | INTEGER | ISR flag, PYTHIA default: |
| 0 = no radiation, | |||
| 1 = ISR & Beamstrahlung, | |||
| 2 = ISR only, | |||
| 3 = Beamstrahlung | |||
| 2 | SQRTS | REAL | nominal collider cms energy [GeV] |
| 3 | SIGMA | REAL | Cross section [fb], if provided |
| 4 | IDCLASS | INTEGER | Reaction identifier, user defined |
| 5 | NEVENT | INTEGER | Number of events to be processed |
| 6 | IFBEST | INTEGER | Flag for best estimates |
| 7 | IFFORM | INTEGER | Flag for formatted output |
| 8 | IFDEDX | INTEGER | Flag for dEdx |
| 9 | IFHIST | INTEGER | Flag for complete (restricted) event history |
| 10 | IFBKGR | INTEGER | Flag for background events |
This record is written once per file.