Ruby Character - Unicode

Unicode

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 annotation separator—marks start of annotating character(s)
• Code point FFFB (hex)—Interlinear annotation terminator—marks end of annotated text

Few applications implement these characters. Unicode Technical Report #20 clarifies that these characters are not intended to be exposed to users of markup languages and software applications. It suggests that ruby markup be used instead, where appropriate.