'the lisp machine' did not do that. There were different attempts. The MIT Lisp Machine used Lisp code in files, with some tool support. The Xerox Lisp Machine

'the lisp machine' did not do that. There were different attempts. The MIT Lisp Machine used Lisp code in files, with some tool support. The Xerox Lisp Machine (different hardware, different Lisp, different OS) used a different approach will full managed source code in the image, with managed files as kind of a way to persist sources.