can this language be written?
Yes. Although there is no well-established writing system for ASL, written sign language dates back almost two centuries.
American Sign Language
Although there is no well-established writing system for ASL, written sign language dates back almost two centuries. 
when was asl recognized as an official language UNANSWERABLE who created it? Thomas Hopkins Gallaudet how is it classified? It brought together Old French Sign Language, various village sign languages, and home sign systems; ASL was created in that situation by language contact. do you know what percentage of the population uses it? UNANSWERABLE is there a stigma to it? Stigmas associated with sign languages and the use of sign for educating children often lead to the absence of sign during periods in children's lives when they can access languages most effectively. what is its syntax? ASL is a subject–verb–object (SVO) language, but various phenomena affect that basic word order. Basic SVO sentences are signed without any pauses do you know how many people use sign language? Between 250,000 and 500,000 are there different varieties? Yes, mutual intelligibility among ASL varieties is high, and the variation is primarily lexical. what are the properties of s-v-o? Subject–verb–object languages almost always place relative clauses after the nouns which they modify and adverbial subordinators before the clause modified, with varieties of Chinese being notable exceptions. can you give me a few examples? "The dog bit Andy" and "Andy bit the dog" mean two completely different things, while, in case of "Bit Andy the dog", it may be difficult to determine whether it's a complete sentence or a fragment, with "Andy the dog" the object and an omitted/implied subject. what is fingerspelling in asl? A form of borrowing, a linguistic process wherein words from one language are incorporated into another. what is phonology? Each sign in ASL is composed of a number of distinctive components, generally referred to as parameters which are the phonemes. what is morphology? ASL has a rich system of verbal inflection, which involves both grammatical aspect: how the action of verbs flows in time—and agreement marking.
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American Sign Language [SEP] Writing systems
Although there is no well-established writing system for ASL, written sign language dates back almost two centuries. The first systematic writing system for a sign language seems to be that of Roch-Ambroise Auguste Bébian, developed in 1825. However, written sign language remained marginal among the public. In the 1960s, linguist William Stokoe created Stokoe notation specifically for ASL. It is alphabetic, with a letter or diacritic for every phonemic (distinctive) hand shape, orientation, motion, and position, though it lacks any representation of facial expression, and is better suited for individual words than for extended passages of text. Stokoe used that system for his 1965 "A Dictionary of American Sign Language on Linguistic Principles".