Maclisp is an extension of Lisp developed for the implementation of the Macsyma symbolic mathematical software on computer systems of the early 1970s, particularly those at MIT. Maclisp had several features that made it suitable for its purpose, including the ability to handle large lists and nested structures typical of symbolic mathematics. It included garbage collection with a stop-and-copy algorithm for memory management and was designed to support high-level mathematical syntax. The language's legacy can be seen in some aspects of Common Lisp, which was based on Maclisp during its development processes.