问题
According to CSS Ruby Module, one can create ruby text with the following syntax:
<ruby><rb>one</rb> <rb>two</rb> <rt>1</rt> <rt>2</rt></ruby>
This document also mentions rbc, rtc, and rp. What is the purpose of these?
回答1:
rbc is a ruby base container. It contains rb elements. rtc is a ruby text container, which contains rt elements. rp is used to show content only in browsers that don't support ruby (See the SitePoint references: rbc, rtc, rp.)
来源：https://stackoverflow.com/questions/23852016/what-is-the-purpose-of-rbc-rtc-and-rp-in-html