Input max characters
From LimeSurvey Manual
Input maximum characters (input_max_characters)
The following option allows you to type in a numerical value that will represent the maximum number of characters that can be entered by the survey respondents in the answer text box(es) of the respective question.
- Any numerical value
- If you wish the survey participants to type in a short and concise answer, introduce within the input maximum characters field a small number (e.g., 10-15).