It represents groups of more-less arbitrary tokens as trees, therefore it's a natural format for code representation as it's equivalent to an AST, therefore it's trivial to attach a basic execution context with if and lambda defined, and now it's executable and turing-complete.
It represents groups of more-less arbitrary tokens as trees, therefore it's a natural format for code representation as it's equivalent to an AST, therefore it's trivial to attach a basic execution context with if and lambda defined, and now it's executable and turing-complete.