U+04C0 CYRILLIC LETTER PALOCHKA

U+04C0 was added to Unicode in version 1.1 (1993). It belongs to the block Cyrillic in the Basic Multilingual Plane.

This character is a Uppercase Letter and is mainly used in the Cyrillic script. It is related to its lowercase 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 179 other glyphs. In text U+04C0 behaves as Alphabetic regarding line breaks. It has type Upper for sentence and ALetter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

The palochka or dzhi (Ӏ ӏ; italics: Ӏ ӏ) (Russian: палочка, tr. palochka; IPA: [ˈpɑɫət͡ɕkə], literally "a stick") is a letter of the Cyrillic script. This letter usually most often has only a capital form, which is also used in lowercase text. The capital form of the palochka often looks like the capital form of the Cyrillic letter soft-dotted I (І і), the capital form of the Latin letter I (I i), and the lowercase form of the Latin letter L (L l) where it represents /j/ in jet.

The letter was introduced during the cyrillization of the North-Caucasian languages in the late 1930s. In order to keep new orthography compatible with Russian typewriters many new alphabets did not contain any letters distinct from the ones of the Russian alphabet (sounds absent in Russian were marked with digraphs and other letter combinations). The palochka was the only exception, and in practice while typewriting the Arabo-European digit 1 was used instead. In fact, on Russian typewriters this character did not look like digit 1, but rather as a Roman numeral I with serifs. This practice still is common, because the palochka is not present in most standard keyboard layouts (and for some of them not even the soft-dotted I) or common fonts, and so cannot be easily entered or reliably displayed on many computer systems.

In the alphabets of the Caucasian languages Abaza, Adyghe, Avar, Chechen, Dargwa, Ingush, Kabardian, Lak, Lezgian and Tabassaran, the palochka has no independent phonetic value, but signals that the preceding consonant is an ejective. (An exception is the Abkhaz language, which does not use palochka for rendering ejectives.)

Example from Avar: кӏалъазе [kʼaˈɬaze], "to speak"

In Adyghe, Chechen, Ingush and Kabardian, Palochka also functions as the glottal stop /ʔ/.

Example from Kabardian: елъэӏуащ [jaɬaˈʔʷaːɕ], "he asked her for something"

In Chechen, the palochka also represents the voiced pharyngeal fricative /ʕ/.