The latter is a simple notebook-like editor containing the contents of the file. That is, the evaluation created a filename object as a gateway to the file codice_9 and opened an editor onto it. The editor itself is an object, as are all its components (down to and including the characters in its menus). The source code is available for all these objects, and VisualWorks has a plethora of inspectors, browsers, and other tools for anyone to evaluate and inspect the code in static or dynamic mode.