if you want to see all detail and download the slide of workshop, Please go to the Source.
It has advantages too, it gets cached at your nameserver and it also has slightly lower latency than HTTP (because there's no need to setup a TCP session).
Here's an example:
$ host -t txt foo.wp.dg.cx
foo.wp.dg.cx descriptive text "Foo may refer to: Foo, bar, and baz: metasyntactic variables, \"Fool\",
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