"Identify" for legend entries

[#1]

When I want to adjust the monitor settings on my windows PC, there is an idendify button to find out which setting belongs to which monitor.

In Graph Builder, is there also similar feature to find out which entry belongs to which subplot?

[#2]

Interactively, the Platforms all have icons at the lower right that when clicked on will bring the data table to the front

       

and in the Data Table window, the platforms that have been run are displayed across the bottom of the data table window.

      

Programmatically there are messages that can be sent to the platform to get things like the what data table is associated with the platform.

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Big Class.jmp" );
obj = dt << Graph Builder(
	Variables( X( :Sex ), Y( :Height ), Group X( :Age ) ),
	Elements( Box Plot( X, Y ) )
);
t = obj << Get Datatable;
Show( N Rows( t ) );

I do not see JSL that provides a list of open platforms that a given data table is based on.

[#3]

I mean:
which of the entries in the legend on the right  belongs to which of the subplot?