As you create an interface in the Interface Builder, source code for the interface is generated. You can use the code view to examine and, if you want, edit this code. You can also save the source code to disk for use in your application. This section discusses how to edit and save the code generated by the Interface Builder, and discusses techniques which let you use the Interface Builder in the most effective way.
LispWorks IDE User Guide (Unix version) - 25 Nov 2011