The Adobe Lightroom application is made up of modular components (i.e., the Library, Develop, Map, Book, Slideshow, Print, and Web modules). If you want to peek inside the Lightroom Application folder, then follow the instructions shown in Figure A.22 and Figure A.23. After you have revealed the package contents you will see the various folders and files that make up Lightroom. In Figure A.23 I expanded the PlugIns folder to reveal the individual module components. Now that you know where the modules are kept, you know how to customize Lightroom.