The Apl Functional Symbol Epsilon 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+2377 (decimal 9079).
Use ⍷ in HTML to render ⍷ on a web page.
On Windows you can type it with Alt+9079 (hold Alt and enter the number on the numeric keypad).
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