U+30FC "ー" Katakana-Hiragana Prolonged Sound Mark Unicode Character

U+30FC "ー" Katakana-Hiragana Prolonged Sound Mark is a typographic symbol used in the Japanese writing system to indicate a long vowel sound in both katakana and hiragana text. It is a horizontal line that follows a syllable to extend its vowel sound, such as in "カード" (kaado, meaning card) or "メール" (meeru, meaning email). Unlike Western punctuation, this character is considered a legitimate part of the written word, not merely a dash or hyphen, and it is rendered as a single, continuous line that aligns with the direction of the text, whether horizontal or vertical. Its inclusion in Unicode ensures consistent representation across digital platforms for Japanese language content.