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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.