If wanting to check if there is a designated language to a certain word, you highlight the word and select Options -> Language.
If a language is selected, it will be displayed on top with dimmed text.
It is also possible to remove a designated language through the menu option Remove language.
If selecting the language Swedish, English, Danish or Norwegian you will have spelling in selected language.
Designate language to a portletYou can designate language for all text in a portlet. Right click the portlet in the content area and then select Properties. The tab Settings -> Select language.