Program gets set of coordinates from user and draws draggable ellipse in
general form through it. Run program holding right mouse button to type
coordinates. Drag middle point of an ellipse using mouse. Move all ellipse
points the same way.

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
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[generic]                 5967   32700  18.2% -lh5- ed78 Feb 27  1980 ellipse_xct_npt_drggbl.amos
[generic]                  269     471  57.1% -lh5- 11c2 Feb 27  1980 ellipse_xct_npt_drggbl.readme
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         2 files    6236   33171  18.8%            Feb 28 16:09