 the cursor to the point of
interest and hit the Central Mouse Button. Suppression status will be
flipped: if the point was good (green color) it becomes bad (red). If
the point was bad (red color), it becomes good (green). Keep in mind:
you cannot change suppression status of unrecoverable observations (black
circles). If the points lay too dense and you have difficulties in
selecting the right point, you may resize the plot. First hit &lt;ESC&gt; for
entering DiaGi mode, then use Central Mouse Button for 