Sometimes there are other files of interest in the same directory. If instructions are given with the electronic address then an automated server will process your request if you include it as the message. Some servers allow the instruction to appear in the subject heading of a mail message, others require it to be in the body of the message. Since this may change from time to time and system to system try it both ways if need be. Be aware that many of the documents are quite large.
Some documents are indices to other documents.
This text is available at most college or university libraries. You may fetch it via ftp or uucp. You may fetch it via ftp or uucp.