Time limit message
From LimeSurvey Manual
Time limit expiry message (time_limit_message)
This is the text of the message that appears to the participant when the time_limit has expired. By default, this message is "Your time to answer this question has expired". If the time_limit_action attribute is set to "Move on without warning" this message is not displayed. You can set the CSS style for this text in the time_limit_message_style attribute (see below).
This settings is only applicable if the general time limit settings is activated.
time_limit_message: The time limit on answering this question is now up.