Parameters

  Keyword    Type      Description
  -------    ----      -----------
   TYPE      CHAR      Shape type
   X         REAL      X-position (x-axis coords)
   Y         REAL      Y-position (y-axis coords)
   DATA1     REAL      Other
   DATA2     REAL        Defining
   DATA3     REAL          Parameters
   WIDTH     INT       Line width
   STYLE     INT       Linestyle
   COLOUR    INT       Line colour