Belgium. Here's an official explanation of the system: http://www.werk.belgie.be/defaultTab.aspx?id=42422# http://www.werk.belgie.be/defaultTab.aspx?id=42422# U

Belgium. Here's an official explanation of the system: http://www.werk.belgie.be/defaultTab.aspx?id=42422# http://www.werk.belgie.be/defaultTab.aspx?id=42422# Unfortunately there isn't an English version (but you can toggle between dutch, french and german). Also a wikipedia entry https://fr.wikipedia.org/wiki/Titre-service https://fr.wikipedia.org/wiki/Titre-service and a google search https://www.google.com/search?q=explication+titre-services https://www.google.com/search?q=explication+titre-services