1.2.1.3. Interrogative particles
There are no interrogative particles in DGS, although there seem to be two different signs that occur quite frequently at the end of an interrogative sentence: palm_up (one-handed or two handed, with a slight move forward) and ix2 (pointing lowered and with hand orientation towards the addressee of the question). These signs are not obligatory, but rather seem to be used as discourse particles [Lexicon 3.11.3] or as turn-taking signals [Pragmatics 10.2] to indicate that an answer to the question is expected from the interlocutor.
a. palm_up
b. ix2