U+2904 "⤄" Left Right Double Arrow with Vertical Stroke Unicode Character

U+2904 "⤄" Left Right Double Arrow with Vertical Stroke is a typographic symbol that combines a standard double-headed arrow, indicating bidirectional movement or equivalence, with a vertical stroke running through the center of both arrowheads and the shaft. This vertical stroke typically serves to modify the arrow's meaning, often representing a logical or mathematical concept such as "reversible" or "complementary" in formal notation, or it may denote a specific relation in computer science and set theory that differs from a plain double arrow. It belongs to the Supplemental Arrows-B block in Unicode, which provides a range of specialized arrow symbols for technical documentation, mathematics, and logic.