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        LAS\WRITE [ObsNum]

    Writes  the  observation in the R buffer onto the output file. If a ver-
    sion of this observation is already in the file, a new  version  of  the
    observation is created. A new observation number can be specified as ar-
    gument. If the implicit (R%HEAD%GEN%NUM) or explicit  (argument  ObsNum)
    value  is  0, automatic numbering is used i.e. a new (unused yet) number
    is chosen (in pratice highest number in use plus one).

    The behaviour depends on the "File Type" (see FILE command):
    - for files of type MULTIPLE, a new version of the spectrum  is  written
      if the ObsNum already exists in the file.
    - for  files  of type SINGLE, the ObservationNumber is automatically set
      to the next one available in the file. If an ObsNum  is  specified  in
      the  command,  WRITE checks if it already exists. If so, it returns an
      error; if not, it sets the specified ObsNum to the written spectrum.
    - for both, the version value (R%HEAD%GEN%VER)  is  always  incremented,
      assuming something has changed in R between the time it has been load-
      ed in memory (or last written) and the current write.
    On return of the command, R%HEAD%GEN%NUM and R%HEAD%GEN%VER are  set  to
    the values which have been used.

    The  information  written depends on the operations done on the observa-
    tion. Existing fit results are written. The calibration  information  is
    written  only  if  the  calibration is checked (see SET CALIBRATION com-

    In the case of (old) on-the-fly data, WRITE automatically splits the da-
    ta  into records with entry numbers starting at 1 unless the observation
    number of the first record is given explicitly.

Gildas manager 2020-10-13