The HTML <rp> tag specifies to show browsers that do not support the ruby annotations. Ruby Annotations are used in East Asian typography.
Example
You can try to run the following code to implement <rp> tag in HTML −
<!DOCTYPE html> <html> <head> <title>HTML Rp Tag</title> </head> <body> <ruby> 漢 <rp>(</rp><rt>Kan</rt><rp>)</rp> 字 <rp>(</rp><rt>ji</rt><rp>)</rp> </ruby> </body> </html>