In HTML 5 mode, the validator does not typographically different between prose and literal

In error messages such as the following, it is all too easy
to parse (e.g.,) "required" [1] as a part of the prose and not
as a literal.  Literals should be typographically differented
so that they can be unambiguously identified.

> Error Line 7, Column 9: A select element with a required attribute
> and without a multiple attribute, and whose size is 1, must have a
> child option element.
>
> </select>

Philip Taylor
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[1] Also "multiple" and "option"