Set up an object for radio buttons to choose among the manufacturer, the shelf, and the vitamins variables. Make sure the labels for each radio button are clear, and set up an appropriate title label for what will form the collection of options to color the points. Name the object filler.

Create a new object for the same radio buttons as specified in (c) that will control the shape of the points (in other words, the characters used to plot points). Modify the title label accordingly. Name this object shaper.