Each PLOT statement produces a separate plot. The plotting symbol is the first character of the formatted value of the symbol variable: K for Kreitz; L for LaGrange. POS= specifies that each plot uses 25 print positions for the horizontal axis. OVPCHAR= designates the exclamation point as the plotting symbol when the plotting symbols coincide. NOSYMNAME suppresses the name of the symbol variable Seller from the second listing.
   plot stove=seller  / pos=25 ovpchar='!';
   plot icebox=seller / pos=25 ovpchar='!' nosymname;