The discussion in this section applies to plots that show individual markers.
The default SAS/IML Studio behavior is to show all observations in a plot. Selected observations are displayed at a larger size than unselected observations. You can choose instead to display only selected observations. This is useful when there are so many points in a plot that the selected observations are not distinguishable (a phenomenon known as overplotting).
You can also examine subsets of the data by displaying only selected observations. This technique is called slicing. You can slice dynamically to explore multivariate relationships.