Doctopus on Google Docs

http://www.freetech4teachers.com/2013/06/three-google-sheets-scripts-that-help.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+freetech4teachers%2FcGEY+%28Free+Technology+for+Teachers%29#.Uc95Fvk3tqU This will make life so easy.