This is the Leet Class Demo. Leet originated within bulletin board systems in the 1980s, where having "elite" status on a BBS allowed a user access to file folders, games, and special chat rooms. One theory is that it was developed to defeat text filters created by BBS or Internet Relay Chat system operators for message boards to discourage the discussion of forbidden topics, like cracking and hacking.
This class has nothing to do with the origins of leet; it just shows how you can easily transform a string to leet-like text.
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