> C, C++, and Objective-C Notice the use of 'C' in the names of the languages? Its because they all belong to a C family which shares code. Just like Lisp lang

> C, C++, and Objective-C Notice the use of 'C' in the names of the languages? Its because they all belong to a C family which shares code. Just like Lisp languages. Wikipedia: "Objective-C is a thin layer on top of C, and is often called a "strict superset" of C" "The C and C++ programming languages are closely related. C++ grew out of C, as it was designed to be source-and-link compatible with C" Emacs Lisp contains many Common Lisp functions and there is even an implementation of Common Lisp integrated into Emacs Lisp: http://www.emacswiki.org/emacs/EmacsCommonLisp http://www.emacswiki.org/emacs/EmacsCommonLisp Emacs Lisp grew out of Maclisp, just like Common Lisp. ISLisp is largely a subset of Common Lisp. For example the Gabriel benchmarks for Common Lisp have been used in ISLisp and they work with only minor changes.