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        LAS\MODIFY SYSTEM System

    Force the System in which the center of projection (central position  of
    the source) is defined. Valid systems are GALACTIC, EQUATORIAL, HORIZON-
    TAL and UNKNOWN. This command is typically used for "foreign" data  when
    the  SYSTEM information has not been decoded correctly by the conversion
    package. No correction is applied on spectrum position.

Gildas manager 2014-07-01