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.