Rebol/Command & Runtime Questions

I have some questions about the Rebol/Command and Runtime that I'm hoping you can answer for me: 1. Is it possible to get a copy of the Win32 Command User Guide prior to purchasing the product. I'd like to know specifically what functions are available before I make this investment. 2. Can the Win32 version of Command read the Windows Registry? 3. I don't understand the pricing structure for Runtime. If I create a standalone executable, do I need 1 runtime license for that particular compiled binary? Or do I need a separate runtime license for each machine that exe is installed on? If the latter, how can I control how many machines it's installed on once I release it? Thanks, Dan