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        [GREG1\]SET SYSTEM Name [Equinox]

    Specify  the  coordinate system used in case of projection. The name can
    be UNKNOWN, GALACTIC or EQUATORIAL (default equinox  is  2000.0  if  not
    provided).  The SYSTEM affects the projection definitions (in particular
    the GRID command) and coordinates sent back  by  the  cursor  (different
    formats are used for each system).

Gildas manager 2021-01-19