You can now map characters that use format overrides to HTML highlights. Such characters have no character tag but do have formatting information associated with them. One way to apply format overrides is by using FrameMaker's Format>Font and Format>Style commands. Another way is by changing aspects of a paragraph in the Paragraph Designer or characters in the Character Designer and applying those changes to the selection, not globally.
You can create format override character rules in the WebMaker user interface or by writing WML rules directly. For more information, see "How to use format override rules" in the WebMaker User Guide.