I have good news for modders out there:

The technical documentation for both Pain Engine and Necro Engine has been released! You can find it on my subdomain, here: http://xdavidxtreme.pkeuro.nl/docs/frames.html?frmname=topic&frmfile=index.html.

The documentation contains information about every engine level LUA function (like the parameters, returns, what they do, and even their default values) and a lot more details about things which are not easily available to the public. You may find some interesting things that you never knew of before… like PLAYER.BotAction or WORLD.EnableSuperDemonFX. So, give it a go and look over it!