In the history of Japanese printing, the "Rakuyōshū" was the first movable-type dictionary to incorporate two "kana" innovations that were already used in handwritten Japanese, and have survived to this day. "Furigana" is printing smaller "kana" alongside a "kanji" to indicate the pronunciation, a practice which allows less-educated people to read Chinese characters. "Handakuten" (半濁点) is printing a small circle to the upper right of a "kana" to indicate voiceless bilabial stops, for example, compare voiced "ha", "hi", "hu" (は, ひ, ふ) with voiceless "pa", "pi", "pu" (ぱ, ぴ, ぷ).