Please provide free language description of what is SBo script

Hi, just as in title. I mean not what purpose serve but how it looks. Components, can we divide script into. It is just what comes to your mind. We do not talk here about bash scripting. Say like cow descripiton: is animal, has four legs, tail, two horns, give milk, beef. Goal is to create scheme like json scheme or xml scheme for proper text human-readable description of a script and then translator (parser) which would produce correct bash script. So starting point is free language description and go into details to finally obtain something which can be directly encoded as scheme.