AXIS /ABSOLUTE

###
AXIS /ABSOLUTE

        The  option  /ABSOLUTE  is  used to write (RA,DEC) labels for EQUATORIAL
        system or (L,B) coordinates for GALACTIC system when a projection is ac-
        tive,  i.e.,  both  a  PROJECTION and a SYSTEM are defined. RA (or L) is
        used for X-like axis, and DEC (or B) for Y-like  axis.  Note  that  this
        should  be  used only for small fields (size less than 0.2 Radians), and
        must be used only with the axes at the default position (i.e. no  /LOCA-
        TION  option).  When SYSTEM is defined but the projection is NONE or has
        never been defined, the /ABSOLUTE option supports  large  fields  (since
        PROJECTION NONE makes a non-conformal mapping anyway). The SET SEXAGESI-
        MAL command (see help) permits some mastering on how UNKNOWN or GALACTIC
        ABSOLUTE labels are written.

        See  HELP TICKSPACE for more information on how to master the Tick spac-
        ing with the /ABSOLUTE or the /UNIT options.