Meanwhile, has anyone else here had any experience(s) with this technology?
I know one of the Machinarium programmers from the REBOL community and I'm from there.
This gives me a special interest in Machinarium. :-)
It's a programming language that's a little different from other languages, perhaps in the same way that Machinarium is different from other games. It's wonderful to work in, very powerful and you write only little code, rarely more than a few kBs for a specific task.
It's good for generating code in other languages, such as flash scripting and maintaining the logic behind the game, which I think is where REBOL was used. It gives you more leverage than trying to code in action script directly.