Nimrod is a new statically typed, imperative programming language, that supports procedural, object oriented, functional and generic programming styles while remaining simple and efficient. A special feature that Nimrod inherited from Lisp is that Nimrod's abstract syntax tree (AST) is part of the specification - this allows a powerful macro system which allows domain specific languages. Nimrod is a compiled, garbage-collected systems programming language which has an excellent productivity/performance ratio. Nimrod's design focuses on the 3E: efficiency, expressiveness, elegance (in the order of priority).