hi, as far as I know, languages/abc is an implementation of the 'basic calculator', commonly found on unix platforms, known as 'bc'. For some reasons, this name changed to 'abc' some time ago.
However, there is also a programming language called 'abc' (a precursor of Python, Guido van Rossum worked on it IIRC). (I just heard about this language this week) Therefore, it might be a good idea to rename abc to bc, so as to have the option to implement the Real 'abc' language on Parrot (which would be a nice project for anybody wanting to learn PCT). kjs