byte magic[8]: "NadeoPak"
 int32 version (8 or higher)
 if (version >= 8)
 {
   uint256     ContentsChecksum;  // Checksum Sha256 of the pack contents starting at next byte
   uint32      Flags;
   SAuthorInfo AuthorInfo; (version=0, string login, string nick, string zone, string extra)
   string      InfoManialinkUrl;
   uint64      CreationDate;
   string      Comment;
   if (version >= 12)
   {
      string   Xml;
      string   TitleID;
   }
   string      UsageSubDir;  // to known the kind of pack it is
   string      CreationBuildInfo;
   string      AuthorUrl;
   if (version >= 10)
   {
      uint128  unused;
   }

   == JPG ==

   // Blowfish encrypted:
   int32       NbIncludedPacks;
   struct SIncludedPacksHeaders
   {
      uint256     ContentsChecksum;  // Sha256
      string      Name;
      SAuthorInfo AuthorInfo;
      string      InfoManialinkUrl;
      uint64      CreationDate;
   } IncludedPacks[];
 }