o decrease the
ambiguity or Right Mouse Button if you would like to increase the
ambiguity counter. The point will be shifted to the down (Left Mouse Button)
or up (Right Mouse Button) one ambiguity spacing. The amount of ambiguity
spacing is shown at the upper right corner of the plot.
 
  It may occur that the point is shifted away from the plotting area.
In that case the point will be shown just beyond the upper or lower
border. Command &lt;M&gt; sets the plotting area around only good points,
command &l