USE THESE STRING FUNCTIONS IN YOUR PROJECTS! Post a link to a project that uses these! I want to see them! If you need help using or understanding any function, please ask! I will do my best to respond to you. You could also ask about a function in the Help with Scripts section of the Discussion Forums. If you have any function or custom block studios or sharing areas I would be delighted if you could add this project to it.
Here's a project that used a function: http://scratch.mit.edu/projects/17942297/