Splitting languages is essential for websites. Otherwise you risk that your website will appear lower in search engines or will be blocked COMPLETELY by search engines like Google.
If you search in Google with Dutch words, Google will primary show Dutch websites. If you want to be found when someone searches in Google with Dutch words, you should have a Dutch page as well. Most of the time a single static page with a small text is enough. Make sure that the text contains words with which you want to be found and a link to the English version of the website.
Note: this page with Dutch text cannot be on your English website. The administrators can make a separate Dutch version for you where you can place this text.
Search engines see website with more than one language on a page as user unfriendly and that is why website with mixed languages will be placed lower in the searching results. Sometimes Googles will not show pages with two languages at all in the searching results. We have seen enough profiles of professors disappear from Google, because the pages contain more than one language. If your page has been removed from the Google searching results due to mixed languages, make sure that you split the languages and go to https://www.google.com/webmasters/tools/submit-url to add the page to Google again.
If you need an English website and a Dutch website, the administrators of WebHare can make a second language version of your website. The URL can also only contain the right language, this means that abbreviations are also be in the correct language if possible.
Directly under utwente.nl
Under a faculty
You can connect websites to each other yourself via the properties of the website, tab 'Content related'. You can repeat this on each folder and each file, but basically that should not be necessary. We advise you to connect the folders in the main menu and maybe other pages that are visited often. This is what the option for the properties of the file looks like:
Fallback to a higher level
If pages are not connected to each other, WebHare will find out if a parent folder (or a parent folder of that) is connected and next it will go there if somebody changes the language. We have found that the visitor usually goes to the correct language via Google or via another source/link he receives. The language switch is not used very often. It is mostly used by the administrators instead of by visitors.