Iteration marks are characters or punctuation marks that represent a duplicated character or word.

The Javanese script is one of Indonesia's traditional scripts developed on the island of Java. The script is primarily used to write the Javanese language, but in the course of its development has also been used to write several other regional languages such as Sundanese, Madurese, and Sasak; the lingua franca of the region, Malay; as well as the historical languages Kawi and Sanskrit. Javanese script was actively used by the Javanese people for writing day-to-day and literary texts from at least the mid-15th century CE until the mid-20th century CE, before its function was gradually supplanted by the Latin alphabet. Today the script is taught in DI Yogyakarta, Central Java, and the East Java Province as part of the local curriculum, but with very limited function in everyday use.