I'm not using it and have not seen it used. So I'm not pleading for it to remain active. It seems like it would be a useful component for testing production/assembly sequence, understanding of data visualizations, etc. But I'm imagining that checkboxes and radio buttons easily obscure too much of the graphic. Probably needs too much development (e,g, check boxes on the side with arrows pointing to locations) to make useful--but it would remain too cumbersome to use in the AT at this point.