In their contexts of use in LIS, articles are optionally produced. Definite articles are realized as pointing signs with a relaxed position (LEXICON 3.6.1), whereas indefinite articles are articulatory similar to cardinal one (LEXICON 3.6.2).
It should be noted that articles are not independent items and cannot be used in isolation to answer questions. As shown in the examples in the next sections, both definite and indefinite articles must co-occur with a noun.