When you look at a page of, or, you will get the following message:
We use cookies to analyse the use of the website so it can be updated and improved based on your needs.
The word 'cookies' is a link. Clicking on it takes you to this page.

What are cookies?

Many of the websites you view place small text files on your computer. This enables the site to recognise your computer each time you visit. We call these text files ‘cookies’.

What do cookies do?

There are 3 types of cookies.

  1. Essential cookies
    Certain cookies are essential for saving settings or preferences during your visit or until your next visit to a website. If you decline cookies from a particular website, the site will ‘remember’ your preference by placing an essential cookie. Without this, you would have to answer the same questions each time you visit.
  2. Tracking cookies
    Some cookies inform the website which pages you are viewing, in what order, and for how long. Using this information, the website can compile statistics that will help it adapt to its visitors’ wishes. Such cookies are similar to those used for conducting online surveys.
  3. Third-party cookies
    Some websites contain cookies from third-party websites. When placed on your computer, they automatically activate handy extras, like Google Maps (with interactive route description), a Facebook ‘like’ button, or a Twitter messaging option. These cookies inform the website you are viewing whether you are logged into Google, Facebook or Twitter.

No personal information

The cookies placed by, and contain no personal information. They cannot be used to identify you. This would require a combination of type-3 cookies and your login details for third-party websites (which can often be traced to individuals). Without additional information, cookies cannot threaten your privacy.

Do you object to cookies?

Do you want to refuse all cookies? You can do so via your web browser settings. For more information about cookies and deactivating cookies, go to the website (only available in Dutch). For professionals: National Cyber Security Centrum.

What cookies do, and place on your computer?

Below, you can see what cookies are placed on your computer by, and for each of the 3 types under ‘What do cookies do?’ above.

Essential cookies (type 1)

The following cookies are used to record your cookie preferences:





5 years

Remembers whether or not you accept type-2 and type-3 cookies. Moreover, this cookie contains a unique number that we can use to prove your permission.

Tracking cookies (type 2)

We collect information for anonymous statistics on visits to our website. This is done by using statistics programs. 
When processing the information, we comply with privacy legislation (Wet bescherming persoonsgegevens - only available in Dutch).

Our website works with cookies and java script codes in order to store the following information:

  • the IP address of your internet provider
  • the browser you use (such as Chrome, Internet Explorer or Firefox)
  • the page from which you arrived at, or
  • the time and duration of your visit to, or
  • the pages you view on, and





1.825 days

Gives each computer a unique ID. Adding up provides information about how many unique visitors view the various sections of, and


Until the end of your visit

Together with the s1-cookie, it identifies separate visits to, and


Until the end of your visit

Establishes whether the browser's technique allows for accepting cookies.

From time to time, we use online surveys to conduct user satisfaction surveys. The results will allow us to further improve our website. Cookies are required here in order to store information. But also in order to remember whether or not you want to participate in such surveys. When processing the information, we comply with privacy legislation (Wet bescherming persoonsgegevens - only available in Dutch).

It concerns the following cookie:





31 days

Is used in order to prevent you from seeing the survey again once you have completed it or if you no longer want to see it.

You can refuse these cookies without this having any effect on the functioning of the website.

Third-party cookies (type 3)

If you use handy extras on our website coming from, for example, Google, Facebook or Twitter, these websites will place a cookie on your computer. We do not have any influence on what third parties do with their cookies.

You can refuse these cookies on, and In that case, you cannot use the related handy extras on, and Your refusal will not have any consequences for other websites.

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