line 8 column 12 - Warning: replacing unexpected b by </b>
line 8 column 35 - Warning: inserting implicit <i>
line 9 column 13 - Warning: replacing unexpected tt by </tt>
line 9 column 34 - Warning: inserting implicit <b>
line 10 column 15 - Warning: replacing unexpected i by </i>
line 10 column 38 - Warning: inserting implicit <b>
Info: Doctype given is "-//W3C//DTD XHTML 1.0 Transitional//EN"
Info: Document content looks like XHTML 1.0 Strict
6 warnings, 0 errors were found!

About HTML Tidy: https://github.com/htacg/tidy-html5
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Or send questions and comments to: https://lists.w3.org/Archives/Public/public-htacg/
Latest HTML specification: http://dev.w3.org/html5/spec-author-view/
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