hi!
I know nothing about the wiki system, so i’m not sure if it’s something you can do so easily.
I just searched for extensions on the wiki and I typed ‘extension’. The article is called extensions, and it does not show up(or at least not in the first few finds). Luckily, I know there is an article, and I know the TD wiki, so I tried extensions, voila, the extensions article came up. This happens quite often to me in this wiki, I have the impression.
I think this is really hard for beginners(they might think TD just has a bad documentation) and annoying for routiniers. A better search engine would really make the wiki a lot more useable.
cheers!