First of all:
Great stuff!!! It helps me a lot of doing my work as programmer for remote and show controls for live events, concerts, conferences, ...
A few days ago I used girder to synchronise 5 Powerpoint-Shows (Slide switching and mouse-moves/clicks) for a automation conference.

But there are some questions left

Is there any documentation (list containing syntax and necessary variables, ...) of integrated girder's lua functions used in scripts?
There are (some) documentations supplied with the plugins e.g. like the serial plugin (SERIAL_SendData(string DeviceName, string DataString, ...), but I havn't found some for the girder's basic functions.

I apologise if there is any documentation and I wasn't too dump to find it by searching the website and the forum.