From Kraytracing Wiki

Introduction

Features

What's new in 2.0

Installation

Windows

Mac

Basics of global illumination

Global illumination techniques in Kray

Setting up LightWave

Environment

Lights

Models

Surfaces

Luminosity

Specularity

Kray Interface

GUI - General tab

GUI - Photons tab

GUI - FG tab

GUI - Sampling tab

GUI - Quality tab

GUI - Plugins tab

Kray plugins

Kray Master Plugins

Kray Surface Shader Plugins

Kray Custom Object plugins

Kray Motion modifier

Kray Modeler plugins

Advanced features