[ Parameters ] section
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The various parameters of PHITS can be defined in [Parameters]  using the following format:

 |  [ Parameters ]
 |  para1 = number \| file.name
 |  para2 = number \| file.name
 |  .......... 

The order of parameters can be changed.  As each parameter has a default value, undefined parameters use the  default values. 

Parameters and default values are listed in the tables shown below.  (D= ) indicates the default value. 

  .. toctree::

   ./parameters_1.rst
   ./parameters_2.rst
   ./parameters_3.rst
   ./parameters_4.rst
   ./parameters_5.rst
   ./parameters_6.rst
   ./parameters_7.rst
   ./parameters_8.rst
   ./parameters_9.rst
   ./parameters_10.rst
   ./parameters_11.rst
   ./parameters_12.rst
   ./parameters_13.rst
   ./parameters_14.rst
   ./parameters_15.rst
   ./parameters_16.rst
   ./parameters_17.rst
   ./parameters_18.rst
   ./parameters_19.rst
   ./parameters_20.rst
   ./parameters_21.rst
   ./parameters_22.rst
   ./parameters_23.rst
   ./parameters_24.rst
   ./parameters_25.rst
   ./parameters_26.rst
   ./parameters_27.rst