The Box Drawings Double Horizontal symbol (═). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Box Drawing.
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+2550 (decimal 9552).
Use ═ in HTML to render ═ on a web page.
On Windows you can type it with Alt+9552 (hold Alt and enter the number on the numeric keypad).
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