4.3.3.2 True and seen momentum, charge and identity of particle

      REAL
     .     PVEC(10,MAXTRK,2),   ! True and seen momentum of track:
                                ! 1-3 : p
                                ! 4   : E
                                ! 5   : m
                                ! 6   : |p|
                                ! 7   : charge
                                ! 8-10 : not used
     .     ABSP(MAXTRK,2),      ! True and seen magnitude of the momentum
     .     CHA(MAXTRK,2)        ! True and seen charge of track
      INTEGER
     .     CD(MAXTRK,2),        ! True and seen LUND particle code of track.
                                ! (SGV will assign the charged pion code
                                ! to all seen charged particles. The user
                                ! can supply a particle identification
                                ! simulation ZDIDEN, if more elaborate
                                ! identification is needed).
     .     JETNB(MAXTRK)        ! Seen jet number of the track. Filled
                                ! by a call to ZAUJSF (directly, or via
                                ! a call to ZAUCLU).