<html>
<body>
<ruby>
<rb>漢</rb> <rp>(</rp><rt>Kan</rt><rp>)</rp>
<rb>字</rb> <rp>(</rp><rt>ji</rt><rp>)</rp>
</ruby>
<ruby>
<rb>02</rb> <rt>Month</rt>
<rb>08</rb> <rt>Day</rt>
<rb>1973</rb> <rt>Year</rt>
</ruby>
<ruby>
<rbc>
<rb>10</rb>
<rb>31</rb>
<rb>2002</rb>
</rbc>
<rtc>
<rt>Month</rt>
<rt>Day</rt>
<rt>Year</rt>
</rtc>
<rtc>
<rt rbspan="3">Date</rt>
</rtc>
</ruby>
</body>
</html>
The rbc element is a container for rb elements when the markup is complex. There should be only one rbc element inside a ruby container.
Ruby characters are small symbols placed next to text (typically Chinese, Japanese and Korean) to clarify pronunciation. The text to be annotated is the ruby base and the annotation is the ruby text.
A live example:
N of