Looking for Server.Load custom scripting documentation

I’m looking for documentation on custom scripting for server.load.

I’ve found plenty of beginner documents on the web telling you how to install and run the built in scripts for server.load. But I’m trying to go one step beyond that by creating custom scripts. But so far I’ve not found any documentation outlining the various possible commands, and their options.

Anyone know of any advanced documentation for serer.load out there?