line 32 column 9 - Warning: nested emphasis <u>
line 36 column 9 - Warning: nested emphasis <u>
line 40 column 9 - Warning: nested emphasis <u>
line 44 column 1 - Warning: nested emphasis <u>
Info: Doctype given is "-//W3C//DTD HTML 4.01//EN"
Info: Document content looks like HTML 4.01 Transitional
Info: No system identifier in emitted doctype
Tidy found 4 warnings and 0 errors!

About HTML Tidy: https://github.com/htacg/tidy-html5
Bug reports and comments: https://github.com/htacg/tidy-html5/issues
Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
Latest HTML specification: http://dev.w3.org/html5/spec-author-view/
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Do you speak a language other than English, or a different variant of 
English? Consider helping us to localize HTML Tidy. For details please see 
https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md