I hope I have interpreted your question correctly. You want to record your page content or blog entries in different languages? That is not possible by default in Confluence. You need a translation app that allows you to do this.
Here is an overview of the apps that allow you to do this https://marketplace.atlassian.com/search?product=confluence&query=translations
If this is not the answer you were looking for, can you please formulate your question better?
Thanks a lot for your answer.
Indeed, I should have phrased better.
Confluence default is set to English.
Many times I need to generate a description in Dutch, so I would like to have the page set to Dutch. Then I also expect spell check to be in Dutch (right now I have many words with red underlining as they are not English). So, how do I set the page to a different language (not Confluence default)?
Unless you have a spell check app installed and running on your Confluence, I would think that the check you mentioned is done through the browser. In this case, you should change the language for the spell check in the browser.
I quickly found the following instructions:
You can search for instructions for your browser in the search engine of your choice.
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