A directory is a collection of files and other directories (or subdirectories) often called a folder. You'll find elements on your computer gathered into folders with such names as "My Documents" or "My Computer," each of which can contain many subdirectories, or subfolders. As you build your web site, you will create directories containing your web site files; you can view, create, and delete these directories in the File Manager. You'll recognize directories there (and on your PC) by their corresponding folder-shaped icons.