Making Application Modules showed you how to keep individual application files synchronized, so that the application executable contained the latest versions of all its source files. Defining the application files as members of a single project simplifies this process further. Instead of listing every source file in your application's Make file, you can point to the VLISP project file and use the project file to identify your source files.
After you've made changes to an application's source files, you'll want to incorporate those changes in the application's executable file.To define an application that includes a Visual LISP project
Choose Next to continue.
Choose the Add button to display the Add Visual LISP Project Files dialog box.
Choose Next to continue to the next step in the Make Application wizard.
Select the DCL file in the Tutorial\VisualLISP\Lesson5 directory, then press Open to add the file to your application.
Choose Next to continue the Make Application wizard.
If you add files to the VLISP project you included in your application, the new files are automatically included the next time you build the application.