Improved clarity of first paragraph - cleared up self-contradiction in first sentence (simultaneous claim that MCLs are and are not languages), made comparison in second sentence clearer, moved introduction of initialism to the beginning of the paragraph. Added a CN for a uncited factual claim.
'''Manually coded languages''' ('''MCLs''') are nota themselvesfamily of gestural communication methods which include [[fingerspelling| gestural spelling]] as well as [[constructed language | constructed languages]] butwhich aredirectly interpolate the grammar and representationssyntax of oral languages in a gestural-visual form; - that is, [[sign language|signed]] versions of oral languages (signed languages). Unlike the [[sign language]]s that have evolved naturally in [[deaf communities]], which have distinct spatial structures, these manual codes (MCL) are the conscious invention of [[Hearing (person)|deaf and hearing educators]], and as such lack distinct spatial structures {{cn|date=September 2019}}. MCLs mostly follow the [[grammar]] of the oral language—or, more precisely, of the written form of the oral language. They have been mainly used in [[deaf education]] in an effort to "represent [[English language|English]] on the hands" and by sign language [[Interpreting|interpreters]] in K-12 schools, although they have had some influence on deaf sign languages where their implementation was widespread.