The following messages for a Bubble Plot object are available only in JSL:
bubble_plot_object << Auto Stretching( string );
bubble_plot_object << Bubble Size( number );
bubble_plot_object << Color Levels( vector );
bubble_plot_object << Get Custom Path;
bubble_plot_object << Get Draw;
bubble_plot_object << Get Label;
bubble_plot_object << Get Shape;
bubble_plot_object << Go;
bubble_plot_object << Label Offset( list );
bubble_plot_object << Prev;
bubble_plot_object << Set Custom Path( ... );
bubble_plot_object << Speed( number );
bubble_plot_object << Step;
bubble_plot_object << Stop;
bubble_plot_object << Time Index( number );
bubble_plot_object << Title Position( x, y );
bubble_plot_object << Toggle Animation;