line 7 column 12 - Warning: nested emphasis <b>
line 8 column 19 - Warning: <b> is probably intended as </b>
Info: Doctype given is "-//W3C//DTD HTML 4.01 Transitional//EN"
Info: Document content looks like HTML 4.01 Strict
Info: No system identifier in emitted doctype
Tidy found 2 warnings and 0 errors!

About HTML Tidy: https://github.com/htacg/tidy-html5
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Latest HTML specification: https://html.spec.whatwg.org/multipage/
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https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md
