Add a portlet of the type 'Plain text'. This will allow you to enter contents in the configured languages.
Click on to edit the title.
Click on to edit the contents.
This will guide you to the page to edit the Title & Content in different languages. The fields are not HTML-enabled.
Click on 'Save' to save the changes and return to the edit screen of the Dashboard.
Click on 'Cancel' to discard any changes.