I've been busy the last few days adding a big new ability to the program. (This feature isn't available yet in the current build... I need to test it a little bit more.) I've also expanded the documentation. There's now a reference section here:

HotkeyNet Reference

I've also spent time writing a new parsing system that will check hotkey files when you load them. It will point out mistakes to the user and give hints for correcting them. It may be a while before this new error detection is visible in a public build, because I have to rewrite all the existing commands so they make use of it.