In June 2002, a scientist with the pseudonym Jean Pollion released, in French, his book "Ummo, de vrais extraterrestres", or, "Ummo, real extraterrestrials" in which he analyses the "Ummite" thoughts and language. He shows that the Ummo language is different from any other language we know in that it is a "functional" language. One of the astonishing properties of this language, according to the author, is that it works without a dictionary. One must only know 18 symbols, that Pollion has named "soncepts", which if combined make up a functional description of the thing or situation that the creator of the "word" is trying to convey. Currently, more than 1300 pages of those letters have been registered, but it is possible that many other letters exist. In a 1988 letter, reference is made to the existence of 3850 pages, copies of which have been sent to several individuals, representing perhaps up to 160,000 pages of total Ummo documents. The true identity of the authors of those reports remains unknown.