There is a bug in wiki links for the English version. When clicking a wiki link on the office page e.g. you are directed to the following URI http://wiki.virtonomics.com/index.php/Principles:Qualification_and_Control/en/?setlang=en#Size_of_the_office. In other words the wiki article "Principles:Qualification and Control/en/" is tried to be opened. This article does not exist, it's simply called "Principles:Qualification and Control". You should fix this broken link, as players who are not too familiar with wikis and how URIs look like, won't be able to find the correct help page.
The same bug seems to exist for all subdivision types. Also some subdivisions have a wiki link next to all attributes (e.g. office), some subdivisions have a wiki link next to some attributes (e.g. Store), and some subdivisions don't have a wiki link at all (e.g. Factories). Since for any one specific subdivision all wiki links go to the same page, it would be better to just include one single wiki link at the top of the subdivision overview and also do this for all subdivisions.
Since the "Principles:Qualification and Control" had a lot of spelling issues and contained lots of factual errors, I also took the time to edit and fix this page.