U+309E "ゞ" Hiragana Voiced Iteration Mark Unicode Character

U+309E "ゞ" Hiragana Voiced Iteration Mark is a specialized punctuation symbol used in Japanese writing to indicate that the preceding hiragana character should be repeated with a voiced or "dakuon" sound, effectively doubling the syllable while adding a voicing mark. For example, when placed after the hiragana "か" (ka), it functions like "かゞ" to represent "gaga," transforming the repetition into its voiced counterpart. This mark is primarily employed in informal or stylized contexts, such as in manga, song lyrics, or historical texts, rather than in standard modern Japanese orthography, where the same effect is usually achieved by directly writing the repeated voiced character. It serves as a visual shorthand, streamlining the repetition of voiced syllables without breaking the flow of cursive hiragana script.