MAP_CENTER

          MAP_CENTER     Character String

    Specify the Map center and orientation in the same way as the  arguments  of
    UV_MAP.
      LET MAP_CENTER "ANGLE AngleValue"   ! Rotation angle
      LET MAP_CENTER "Ax Ay Unit"         ! Center position
    where  Unit is any of DEGREE, MINUTE, SECOND, RADIAN or ABSOLUTE.  These two
    possibilities can be combined in any order:
      LET MAP_CENTER "ANGLE AngleValue Ax Ay Unit"
      LET MAP_CENTER "Ax Ay Unit ANGLE AngleValue"
    In the latter case, the keyword ANGLE can be omitted.

    For Unit ABSOLUTE, Ax Ay should be the RA and Dec  in  standard  sexagesimal
    notation. As usual in SIC, keywords can be abbreviated provided they are not
    ambiguous.