The question mark [ ? ] (also known as interrogation point, query, or eroteme in journalism)[1] is a punctuation mark that indicates an interrogative clause or phrase in many languages. The question mark is not used for indirect questions. The question mark glyph is also often used in place of missing or unknown data. In Unicode, it is encoded at U+003F ? QUESTION MARK (HTML ?).Must admit I've never heard ? called eroteme. The term would more appropriately apply to =D or {(.)} but it was probably invented by some ivory-tower creature who claimed to be above such nonsense. Turned out to be a literal FUCKING QUESTION after all. See Rohrschach jokes.
The current icon shows Polistra using a Personal Equation Machine.