HepMC
2.06
Output Issues

• Since HeavyIon and PdfInfo were introduced, ASCII output has included lines for these classes whether or not they were present in the GenEvent.
• With 2.06, HeavyIon and PdfInfo are only written to ASCII output if present in the event.
• This will require some backporting.
• Add the ability to insert and ignore random lines.
  • Allow this only in the event header.
    The vertex and particle information section requires a strict format.
  • This would allow future extensions of the information content in the HepMC header. This extra information would not cause problems when read by previous versions of HepMC which do not recognize the new data.
  • The N, U, C, H, and F event header lines must lie between the E line and the first V line for each event.
  • N, U, C, H, and F lines can appear in any order.
  • This will require some backporting.

• There are two requests for binary output for non-LHC users.
  • non-ROOT binary output with a known format
  • ROOT binary output
• These will be made available as separate packages.