The next filter displays a list of countries covered by your subscription. By ticking one or more countries in this list, stocks that have their primary listing in a securities exchange based in those countries will display. The grid is refreshed after closing the list (by clicking outside of the list control).
There are 3 different options to select countries.
For each of these options, clicking a second time will remove these countries from the screener. If you selected a lot of countries, just hovering over the picklist will display a list of the countries selected.
Please note that the filter will only show the markets covered by your subscription.