How can I use JSL to determine if the specified script has an open edit window?

[#1]

For example, I open the script window for "C:\test.jsl".
How do I use JSL to determine if this script window exists?

dz = Open( "C:\test.jsl", Charset( "gb2312" ), Add to Recent Files( 0 ) );
Include( "C:\test.jsl" );

Thanks!

[#2]

In the debug window, does the JSL window not display the name as the data table?

[#3]

<< Get Window Title might be enough depending on what you are doing

Names Default To Here(1);

sb = Open("$SAMPLE_SCRIPTS/bootstrapSample.jsl");
show(sb << Get Window Title);