Here are a couple of odds and ends that you may find useful.

• A link to an external page which contains a complete table for checking files and directories, as mentioned on page 257 of the second edition of my book (page 199 in the first edition).
• Having seen the success of the "Created with" banner for my other book, HTML 4 for the World Wide Web: Visual QuickStart Guide, I have decided to create a "created with" banner for the Perl and CGI book. Be sure and let me know if you decide to use it.