Translations:First login - your user preferences/33/en
From LimeSurvey Manual
Hint: Why not always choose the HTML Editor? Depending on your use of LimeSurvey, there may be many text boxes on a single page, each with a copy of the editor. For instance, when editing the email text for a survey invitation that is offered in 5 languages, you can then have a total of 20 inline HTML editors active on the page. Each instance takes a fair amount of resources and will likely cause issues on your browser. So, if you work with multiple language surveys, we recommend you stick with the normal text editor or 'Popup' setting.