FILE OUT

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FILE OUT

            LAS\FILE OUT Name
            LAS\FILE OUT Name SINGLE|MULTIPLE [/OVERWRITE]

        Open a Class file for writing.

        The  first  form  opens an old, already existing file, for appending new
        observations into it.

        The second form creates a new (empty) file. If a file with the same name
        already  exists,  it is overwritten if the option /OVERWRITE is present.
        An error is raised otherwise.
        A new ouput file can be of 2 different kinds:
          - the type MULTIPLE allows to have several version of the  same  spec-
            trum (same ObservationNumber). This type is the "historical" one for
            CLASS. It can be opened in all modes.
          - with the type SINGLE, the ObservationNumber is a  unique  identifier
            of  the spectrum: only one version exists. This type has been intro-
            duced to simplify and speed up On-The-Fly processing, in  particular
            at the telescope. It can not be opened in BOTH mode.