Well, while the functionality is there, I haven't developed any scripts for Kokua since I have a headless Windows box I can run twxproxy on
The default language of Kokua is JavaScript. You should be able to find a ton of books, articles, and tutorials for it all over the internet, as it is used heavily in web pages. The usual functions like waitFor(), waitMux(), print(), etc., are defined in the file $USER_HOME/.kokua/scripts/global.js
If you need more help, feel free to email me.
Don