Thanks to Mr. Gary Campbell, the author of “FCELL.COM” whose original message provided the inspiration for this article. Thanks to Omer Zak, who went over an early draft of this article and supplied many useful comments. Thanks to Jacinta Richardson of Perl Training Australia, who gave some very useful comments on the first and second revisions, and to “Limbic_Region”, for noting an omission from it. Thanks to many people on the IRC (= Internet Relay Chat) who have read the article and commented, and chose not to be explicitly credited.
Finally, thanks to all the past and present people who helped me with Freecell Solver, and with the rest of my Free and Open Source Software (FOSS) endeavours.