5.3.2 Header

The header of the parameter file contains information about the file format and contents. The description array can be used to specify the goal of the simulation, special model characteristics, or important parameter changes compared to a previous or standard model. The history array may contain the predecessor of the parameter file to simplify a tracing of parameter changes.

• fileform uio:
  The header of the parameter file, e.g.

  fileform uio form=formatted convert=ieee_4  date='01.01.2002' &
    program='by hand'
  

  can be abbreviated to

  fileform uio form=formatted convert=ieee_4
  

  which indicates that the file is in UIO form and Fortran ``formatted'' (ASCII). The specification of the conversion type (``convert=ieee_4'') is more relevant for unformatted files. These terms should not be changed. But it can be of interest to append e.g. the date of the last modification (e.g. ``date='01.01.2002''').

• character file_id:
  The file identification string

  character file_id  f=A80 b=80  n='File identification'
  rhd-parameter
  

  indicates the intended use of the file as parameter file for the RHD code CO5BOLD. Do not edit!

• character description:
  The header of the file can (should) contain a short description of the simulation, as in e.g.

  character description  d=(1:4) f=A80 p=1 b=80  n='File description'
  Parameter file for RHD code:
  Full size 3D Betelgeuse model: 5 M_Sun, 650 R_Sun
  Start with st35gm04n03_09.end (127^3 -> 171^3)
  Run with SHORTrad
  

  This entry is optional (it can be omitted completely) but it is recommended to put at least some relevant keywords into this array. If you change the number of lines (between 1 and 20) you have to adjust the size specification (``d=(1:4)'' in the example above).

• character history:
  The file history has a similar purpose as the previous entry. It can be used to keep information about the ``parent'' parameter file, as in

  character history  d=(1:2) f=A80 p=1 b=80  n='File history'
  Taken from st35gm04n03_09.par
  Last Modification:           01.01.2002
  

  Its use is optional.