Each data point is shown by an icon. %PRODUCTNAME uses default icons with different forms and colors for each data series. The default colors are set in <switchinline select="sys"><caseinline select="MAC"><item type="menuitem">%PRODUCTNAME - Preferences</item></caseinline><defaultinline><item type="menuitem">Tools - Options</item></defaultinline></switchinline><item type="menuitem"> - Charts - Default Colors</item>.