There is no feature for this but copy-paste should do the trick.
Best regards/Beste Grüße,
Dr. Marcel Minke
survey-consulting.com
offlinesurveys.com
Feel free to contact me by email for professional LimeSurvey support!
If you see the need to change this text frequently, you could define the string in template.js and then insert it with a script in appropriate questions.
1) Add something like this to the end of template.js:
Code:
var helpText1 = '<p><img align="left" alt="Help" src="/limesurvey/images/help.gif"> Some common help text...</p>';
2) In all questions where you want the text to appear, add this to the source of "Help":