With some keyboard layouts, AltGr is a modifier key used to input some characters, primarily ones that are unusual for the language of the keyboard layout, such as foreign currency symbols and accented letters. These are often printed as an extra symbol on keys.
Akked kra n tneɣrufin n unasiw, AltGr d taqeffalt n ubeddel tettuseqdac i usekcem n kra n yisekkilen, deg tazwara tid-nni ur neggit ara i tutlayt n tneɣruft n unasiw, am yizamulen n tedrimt tabaṛṛanit d yisekkilen s ufeskil. Zgant ttusiggzent d izamulen-nniḍen ɣef tsura.