Romanization from Serbian (Cyrillic) to Latin and back.
Romanization (one form of transliteration) is the process of transcribing text that is in a non-latin based writing system into a roman system, based on 26 letters with or without diacritics (like â, č and ě). For romanization of cyrillic-based languages there are a lot of different systems. These are the ones used for Serbian.