U+E0072 "󠁲" Tag Latin Small Letter R Unicode Character

U+E0072 "󠁲" Tag Latin Small Letter R is a special formatting character used within the Unicode tag system, part of a set of 95 printable tags in the Supplementary Special-purpose Plane. It does not represent a standalone letter for regular text but serves as a component for encoding plain text tags, such as language tags or custom metadata, by combining with other tag characters to form sequences that are invisible in normal rendering. Specifically, as the tag for the Latin small letter "r", it is intended to be used with a terminating tag character (U+E007F) and other tag letters to compose identifiers like those for deprecated language codes, allowing systems to embed hidden semantic information within a text stream.