Yeah. (Author here.) The goal is not a specific level, just to do as much as possible with local rewrite rules. That gets some surprisingly high-level features

Yeah. (Author here.) The goal is not a specific level, just to do as much as possible with local rewrite rules. That gets some surprisingly high-level features, but the result overall will still seem fairly low-level. (And then there's all the runtime overheads. Mu isn't trying to compete on performance.)