Currently the markup of element names in the docs is inconsistent. I have found b, i, codeph, and quotation marks use, as well as no markup at all.
Personally, I think that element names are important enough in this doc set that they should have specific markup of their own that would identify the vocabulary they belong to. That would allow us to generate links to their respective language specs.
There are similar issues with the markup of API names and other syntax items such as CSS syntax.
We need a policy for these items as well.