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" ...grammatical or format markers, for example by being in boldface, or underline, or as anchor text in a hyperlink, or in quotation marks."
" ...whether the occurrence is a title, bold, a heading, in a URL, in the body, in a sidebar, in a footer, in an advertisement, capitalized, or in some other type of HTML markup." Note that measurements are suggested here for position on the page.
But don't start thinking of the algorithm as a score card of some kind - that the more boxes you get checked off, the higher goes your score. That kind of linear approach was something like the way things worked in the "old school" search algorithms of the '90s.
Today, if you take that approach, you're very likely to smack into Google's over-optimization penalty, which we originally called the -950 penalty. In fact, the quotes I included above are from Google's 2006 patent Detecting spam documents in a phrase based information retrieval system [webmasterworld.com].