Run the named Scripting Layer for Android (SL4A) script.
Every file in /sdcard/sl4a/scripts is expected to be a script.
More information: http://code.google.com/p/android-scripting/.
Passed Variables is a comma-separated list of variables to pass in the intent which starts the script. Their values *at time of launch* can be accessed from the script by looking at the received intent.