The Ditto Mark symbol (〃). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Punctuation.
The quickest way is to copy 〃 from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
〃 is U+3003 (decimal 12291).
Use 〃 in HTML to render 〃 on a web page.
On Windows you can type it with Alt+12291 (hold Alt and enter the number on the numeric keypad).
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