C-script. The language used before LiteC came into the picture.
In answer to your second question, I'm in a position where I must be self-reliant. Until I have a team of programmers ready to build it right, and the funding to keep them happy, I use the tool I can more readily work with by myself: Acknex. The purpose of the current demo is to be more or less a really nice "proof of concept" to get the ball rolling. So no, at the present moment it does not limit, but enable.