The Left Half Block symbol (▌). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Block Elements.
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+258C (decimal 9612).
Use ▌ in HTML to render ▌ on a web page.
On Windows you can type it with Alt+9612 (hold Alt and enter the number on the numeric keypad).
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