It's simalar to the tag bars (Like resolved, added, invaild, and other) right by the thread title on Technical Support and Feature Requests. So they can know what language it is.
Exmaple: Thread title [Swedish] (code for the bar tag)
[Danish] = tag bar
[Norwegian] = tag bar
[Swedish] = tag bar
+Support
Exmaple: Thread title [Swedish] (code for the bar tag)
[Danish] = tag bar
[Norwegian] = tag bar
[Swedish] = tag bar
+Support