Today, I want to share some info (that can also be found in the SDL Trados Studio Online Help) about recognized tokes also known as placeables.
When I started to use SDL Trados 2007 I was somehow like "Placeables...Tokens...What?...
So many articles where created shortly before the release and after the release of Studio 2015. This might cause a problem...you probably cannot keep track of all the new information :)
Before changing or adding something in the Windows Registration Editor I recommend that you make a backup. If you are not aware on how to do that maybe the blog post of mine can help you:
...but I managed it to put almost 800 language & language variants in a list that is showing on what operating system these languages + variants are available...