PRG Mbox Designer Manual 3.9 - Manual (Page 113)

MBOX ® MEDIA SERVER USER MANUAL 105
More Information
There are many sources for information about AppleScripting and shell scripting on the internet and in book form.
Suggestions:
https://developer.apple.com/library/mac/documentation/AppleScript/conceptual/AppleScriptLangGuide/
introduction/ASLR_intro.html
http://macosxautomation.com/applescript/index.html
http://en.wikipedia.org/wiki/AppleScript
http://macscripter.net/