<rp></rp> element, or ruby parentheses, was introduced in HTML5. It is used in
<ruby> elements to define what to show browsers that do not support the
<ruby> element. This element was not designed to be used in Complex Ruby authoring situations. The
<rp> element was meant to be a simple fallback mechanism, and it is not suited to the complexity of the Complex Ruby usage scenario.
- Global Attributes
<ruby> 漢 <rt><rp>(</rp>ㄏㄢˋ<rp>)</rp></rt> </ruby>