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fltfarr(file, dimensions [, offset=offset,
/readonly, /swap])
Links a float array dimensional structure with the specified
dimensions to the specified file.
dimensions may be an array, or a list of up to ten
dimensions. The file need not exist. offset indicates the
length in bytes of a header after which the array data is to be found.
It defaults to zero. Keyword /readonly disallows writing to the
disk file through the file array. Keyword /swap indicates that
the data should be byte-swapped after reading (for input only).
See also: File Arrays, array