<subsection Wikipedia>
When I was in school, my teachers always told me to never use Wikipedia (since everybody could just change it). And while there are regions in which this might be true, for informatics Wikipedia can be a great source. Just maybe don't just copy text from there. First of all, these are only full sentences (see previous chapter(s)). Maybe even more importantly People notice and it is hard to care to read something when even the creator did not do this. Also, at least remove links.
