( is called by:   hec_packages.f 
)
 
includes the following commons:
   
hec_par.inc
   
hec_datacard.inc
 
    This routine
books some system histograms by calling:
    hec_his_ini.f
    Then a
pass over the data is performed with a call to:
    hec_his_pass1.f
    and the
output and termination of the histograms is handled by:
    hec_his_ter.f