The Apl Functional Symbol Diamond Underbar symbol (⍚). Copy and paste it, or use its Unicode, HTML, and CSS codes.
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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+235A (decimal 9050).
Use ⍚ in HTML to render ⍚ on a web page.
On Windows you can type it with Alt+9050 (hold Alt and enter the number on the numeric keypad).
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