Parameters

 Keyword   Posn  Type       Description
 -------   ----  ----       -----------
 ARDFILE     1   CHARACTER  Name of the output text file
 NEW             LOGICAL    Open a new file (Y) or append to an
                            old one (N) ?
 EXCLUDE         LOGICAL    Is this an EXCLUDE (Y) or INCLUDE (N) region ?
 SHAPE           CHARACTER  Shape of the area e.g. circle, ellipse...
 XCENT           REAL       Centre of the shape in the X axis
 YCENT           REAL       Centre of the shape in the Y axis
 XWIDTH          REAL       Width of the box (axis units)
 YWIDTH          REAL       Height of the box (axis units)
 RADIUS          REAL       Radius of the circle (axis units)
 SMINOR_AXIS     REAL       Semi minor axis (axis units)
 SMAJOR_AXIS     REAL       Semi minor axis (axis units)
 ORIENT          REAL       Orientation of the ellipse (degrees).
                            Anti-clockwise from the X axis
 NPTS            INTEGER    Number of points in the polygon
 X1              REAL       X axis value of the first polygon point
 Y1              REAL       Y axis value of the first polygon point
 .
 .
 X10             REAL       X axis value of the tenth polygon point
 Y10             REAL       Y axis value of the tenth polygon point
 NCOL            INTEGER    Number of columns if shape is column
 NROW            INTEGER    Number of rows if shape is row
 XEND1           REAL       X value of one end of the line
 YEND1           REAL       Y value of one end of the line
 XEND2           REAL       X value of one end of the line
 YEND2           REAL       Y value of one end of the line
 NPIX            INTEGER    Number of pixels
 INNRAD          REAL       Inner radius of an annulus (axis units)
 OUTRAD          REAL       Outer radius of an annulus (axis units)
 MORE            LOGICAL    Choose another shape ?