OUTPOI ( point, pttype, defn, ifail )
=====================================

  Output point.

    Can be called from the GO.

Receives:
  KI_tag_point             *point          --- point to be output

Returns:
  KI_cod_typt              *pttype         --- type of point
  KI_vec_position           defn           --- point coords
  KI_cod_error             *ifail          --- failure code

Specific errors:
  KI_wrong_sub_type         unknown type of point

Description:
  The type and coordinates of the point are returned.

  The type-code will be from the range TYPT00.  At present the only value
  is TYPTCA (Cartesian point).