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HTML rp Tag

Some Browser don't show parentheses around a ruby text, then <rp> tag is helpful to provide parentheses around a ruby text.

Example of Code

<ruby>
    base 
    <rp>fallback text...</rp>
    <rt>annotation</rt>
    <rp>fallback text...</rp>
</ruby>

Output

    base     fallback text...    annotation    fallback text...