If you understand how PCBoard's file system works, it will be easier to setup your system to work the way you want it to work. The following is a brief explanation of all files that are relevant to your file directory system.

This is the file that is displayed to users when they select F from your main menu to view the file directories on your system. In essence, this is a text file which lists what each file directory on your system contains so users can select the file directory they wish to view.

This is the file PCBoard uses to determine where the file descriptions are stored, and the description for the directory contents.
PCBFiler uses DIR.LST to determine where the files are stored on your hard drive or similar device. PCBFiler also determines what method to use when you sort your directories by reading DIR.LST.

is a file which contains a list of paths PCBoard will search through for files that a user requests to download. Only the paths listed in this file are searched when a user requests a download.

There is no direct relation to downloading and the description of the files. The descriptions for the files are merely a convenience to the user so they know what files are on your system.