Combining Left Arrow Below

It puts a left-pointing arrow beneath the marked base.

In a formula, the arrow is an accent: the surrounding expression gives the marked symbol its particular role.

A November 2004 proposal asked for additional mathematical and technical characters so MathML (a format for web mathematics) and ISO character entities (named character codes) could represent forms already under review by technical publishers.

Why does ⃮ look wrong by itself?

It needs a base character and suitable mark positioning.

A combining mark follows a base instead of taking its own cell. Unicode charts show isolated marks against a dotted circle, which stands in for the missing base; live text may show a placeholder, a detached arrow, or no clear mark if the font cannot position it.

A math layout can place it as an under-arrow accent, while ordinary text layout may not. The font and rendering engine affect whether it sits neatly beneath its base.

How do I type ⃮?

Append the mark after the character it should modify.

In a Unicode-aware source string, write \u20EE after the base; in HTML, put ⃮ after it. For math typesetting, use \underleftarrow in an engine that supports under accents.