Koalib language

Koalib (also called Kwalib, Abri, Lgalige, Nirere and Rere) is a Niger–Congo language in the Heiban family spoken in the Nuba Mountains of southern Sudan.

[2] The Koalib Nuba, Turum and Umm Heitan ethnic groups speak this language.

Koalib dialects and locations (Ethnologue, 22nd edition): It is written using the Latin script,[2] but includes some unusual letters.

The Unicode Standard includes R WITH TAIL at code points U+027D (lowercase) and U+2C64 (uppercase), but the Unicode Consortium in 2004 declined to encode the at sign separately as an orthographic letter due to lack of evidence of use.

[4] SIL International maintains a registry of Private Use Area code points in which U+F247 represents LATIN SMALL LETTER AT, and U+F248 LATIN CAPITAL LETTER AT.