This is where it all started. The only free download :)
This script will allow you to prevent a script from running until you click enter. It allows you to manage multiple scripts on your transmitter, and select which one to run without having to connect to a pc to change files.
It is extremely useful for 2.0. In 2.1 you can do that in the telemetry screen as well, but not as quick.
Although this is still a useful little script, it is not that userfriendly to setup.
With the AppMan you can achieve much more. You can manage all your apps in one user interface. Start, stop, select, etc.
It comes with the Basics App as part of the package.