To sign, remix the project and add in your username. What is "CF"? CF stands for Cystic Fibrosis which is a progressive, genetic disease that causes persistent lung infections and limits the ability to breathe over time. And basically, it makes those people live for a shorter time. If you would like to join the support group then ask to join the official "Support for Cystic Fibrosis" studio here: https://scratch.mit.edu/studios/4161771/
