U+A645 CYRILLIC SMALL LETTER REVERSED DZE

U+A645 was added to Unicode in version 5.1 (2008). It belongs to the block Cyrillic Extended-B in the Basic Multilingual Plane.

This character is a Lowercase Letter and is mainly used in the Cyrillic script. It is related to its uppercase variant and its titlecase variant .

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 4 other glyphs. In text U+A645 behaves as Alphabetic regarding line breaks. It has type Lower for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Dzelo (Ѕ ѕ) is a letter of the Cyrillic script, used in the Macedonian language to represent the voiced alveolar affricate /dz/, pronounced like (ds) in "pods". It is derived from the letter dzelo or zelo of the Early Cyrillic alphabet, and it was used historically for Old Church Slavonic, Ukrainian, Russian, and Romanian.

Although fully obsolete everywhere in the Cyrillic world by the 19th century, the letter zelo was revived in 1944 by the designers of the alphabet of the then-codified Macedonian language. As the Macedonian language is central to the Balkan Linguistic Union, the phonetical need for this individual letter is consistent with the phoneme's presence in Greek (δζ), and Albanian (x), both non-Slavic neighbours to the Macedonian language. In the early 21st century, the same letter also appeared in Vojislav Nikčević's proposal for the new alphabet for the modern Montenegrin language.

The most common early letterform (Ѕ ѕ) resembles the Latin letter S (S s), but it is also seen reversed (ꙅ) like the Latin letter Reversed S (Ƨ ƨ), or with a tail and a tick (ꙃ).

The Abkhaz language includes a letter with an identical function and name, but different shape. See Abkhazian Dze for more information.