When you click a check box, you can either deselect or select it. Value is the number value of the Control Field. Meaning is the text description of a Control Field. Data Items are statistics that are tabulated for industries, products, and lines.
Value only is attributed to a data item.
You can click on a Control Field or Data Item, and you will be provided with its description and the metadata associated with it. When you have made your selections, click the Update button to display your view of the data.