struct reel {                    
long	  kjob,  kline, kreel;
short     kntr,   kaux,     sr, kfldsr, knsamp, kfsamp,  kform;
short   kmfold,  ksort,  kvsum, kswfrs, kswfre,  kmssw, kswtyp;
short    kswtr, kmsbst, kmsest, ksttyp, kcorcd, kbgrcd, kartyp;
short   kunits,   kpol,  kvpol;
short    nyear,   nday,  nhour,   nmin,   nsec,  nmsec;
char    dum[328];
};

struct trace {                    
long	 kline,  kreel, kfldfn, kfldtn,  ksptc,   kcdp, ktrace;
short   ktrtyp,  kvsum,  khsum,  kduse;
float    range;
float     kgpel,  kspel;
long     kspdp, kgpdat, kspdat, kspwdp, kgpwdp;
short   kelsca, kcosca;
float    shotx,  shoty,  rcvrx,  rcvry;
short   kunits, kwtvel, kswvel,  sptuh,  gptuh,   spst,   gpst;
short    statc, kmslga, kmslgb, kmsfds,  fmute,  tmute, knsamp;
short       sr, kgntyp, kinsgn,   kbgn, kcorcd, kswfrs;
float     cdpx,   cdpy;
long    k3dste;
short    kalhz, kaldbo,  knthz, kntdbo,  klohz,  khihz, klodbo;
short   khidbo,  kyear,   kday,  khour, kminit, ksecnd, ktmtyp;
short   ktrwgt, kgprs1, kgpbtr, kgpetr, kgpgap, klntpr;
char    stn[8];
short   shot;
char    dum[50];
};

static struct reel reel_null = {
  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  
  0,  0,  0,  0,  0,  0
};

static struct trace trace_null = {
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,
  0.0,
  0.0, 0.0,
  0,  0,  0,  0,  0,
  0,  0,
  0.0, 0.0, 0.0, 0.0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,
  0.0, 0.0,
  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,
  {' ',' ',' ',' ',' ',' ',' ',' '},
  0,
{ ' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',
' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',
' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}
};