include "fitsio.h" procedure fsmrec(ounit,nkey,record,status) # modify the nth keyword in the CHU, by replacing it with the # input 80 character string. int ounit # i output file pointer int nkey # i number of keyword to be modified char record[SZ_FCARD] # i 80-char header record % character frecor*80 int status # o error status begin call f77pak(record,frecor,SZ_FCARD) call ftmrec(ounit,nkey,frecor,status) end