QS:Hidden
From LimeSurvey Manual
Description
If you prefill a question by URL you can use this setting to hide the question and its value from the survey participant at all. This overrides any conditions because the particular question is never even embedded in a page. If you just want to hide a question (for example if you want to store a value calculated on the fly) then use Javascript embedded in the question source code.

Available options
- On
- Off (default)