Here is an example of Japanese ruby characters (called furigana) for Tokyo ("東京"):
Most furigana are written with the hiragana syllabary, but See more

Ruby may be used for different reasons:
• because the character is rare and the pronunciation unknown to many—personal name characters often fall … See more

In British typography, ruby was originally the name for type with a height of 5.5 points, which printers used for interlinear annotations in printed documents. In Japanese, rather than referring to a font size, the word became the name for typeset furigana. … See more

In 2001, the W3C published the Ruby Annotation specification for supplementing XHTML with ruby markup. Ruby markup is incorporated into the XHTML 1.1 specification and in HTML5.
For browsers that do not support Ruby natively, Ruby … See more

Unicode and its companion standard, the Universal Character Set, support ruby via these interlinear annotation characters:
• Code point FFF9 (hex)—Interlinear annotation anchor—marks start of annotated text
• Code point FFFA (hex)—Interlinear … See more

ISO/IEC 6429 (also known as ECMA-48) which defines the ANSI escape codes also provided a mechanism for ruby text for use by text terminals, although few terminals and terminal emulators implement it. The PARALLEL TEXTS (PTX) escape code accepted six … See more

• Wikipedia:Manual of Style/China-related articles § Ruby characters, and Furigana (Japanese)
• Emphasis points, marks use for emphasis, which can be implemented similarly to ruby
• Harakat – vocalised See more