Translations:Creating a new survey/20/en
From LimeSurvey Manual
On this tab you can set which additional URL parameters will be accepted by your survey. If you like you can also save the value as a response of a "Short text question" or "Multiple short text question" type (you will be able to select any short text question to save it to). Even if you do NOT save the value of the URL parameter you will be able to use this parameter in the end URL. Please have a look at the documentation of the End-URL for further information.