0x21D6

0x21D6 is a hexadecimal notation used to refer to the Unicode code point U+21D6. This code point is in the Unicode Arrows block, which spans from U+2190 to U+21FF, and is used to encode various arrow symbols in text and mathematics.

The glyph associated with U+21D6 is an arrow symbol. The exact appearance can vary by font and rendering system, as with other Unicode symbols. In most contexts it is treated as a typographic arrow rather than a letter or number, and it may be used in diagrams, formulas, or user interfaces to indicate direction or mapping.

In terms of encoding and representation, 0x21D6 can be written in text as the actual character, or represented by Unicode escape sequences in software. Common forms include the hexadecimal escape \u21D6 (in languages that support it) and the HTML entity ⇖ or decimal ⇖. When stored in UTF-8, U+21D6 is encoded as a three-byte sequence, following the standard Unicode encoding rules.

Usage and context-wise, 0x21D6 appears in technical documents, programming sources, or typeset material that require precise arrow notation. It is one of several directional symbols in the Arrows block, alongside related code points like U+21D0 through U+21D5 and U+21D4, which cover other arrow directions and combinations.

See also: U+21D0 to U+21D5, U+21D4, and related arrow symbols in the Unicode Arrows block.