Is there some highly-detailed documentation on HUD parameters? Specifically, I'd like a complete list of possible parameters for each control type, perhaps even with explanations. Font properties beyond scanlines and blur would be nice, too.

I was reading [url=https://developer.valvesoftware.com/wiki/VGUI2:_Creating_a_panel]Source Engine documentation[/url] and found some parameters I'd never heard of that turned out to be extremely useful (roundedcorners and auto_wide_tocontents), and I'm willing to bet there are more uncommon manipulations most HUD makers simply haven't seen or tested.

I am already aware of Doodle's HUD guides/documentation; it's far from complete and a bit outdated. I've read the [url=https://developer.valvesoftware.com/wiki/Vgui]seemingly relevant content[/url] on the development wiki, but it mostly describes the already-familiar parameters or C++ code for developing with the Source engine, of which I know very little about.