Input Instructions for PURR

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     *                                                                *
     * card 1                                                         *
     *   nendf   unit for endf/b tape                                 *
     *   nin     unit for input pendf tape                            *
     *   nout    unit for output pendf tape                           *
     * card 2                                                         *
     *   matd    material to be processed                             *
     *           matd=0 terminates purr                               *
     *   ntemp   no. of temperatures (10 max)                         *
     *   nsigz   no of sigma zeros (10 max)                           *
     *   nbin    no. of probability bins                              *
     *   nladr   no. of resonance ladders                             *
     *   iprint  print option (0=min, 1=max, def=1)                   *
     *   nunx    no. of energy points desired (def=0=all)             *
     * card 3                                                         *
     *   temp    temperatures in kelvin (including zero)              *
     * card 4                                                         *
     *   sigz    sigma zero values (including infinity)               *
     *                                                                *
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