These and more are all presumed isolates or small local families, because many deaf communities are made up of people whose hearing parents do not use sign language, and have manifestly, as shown by the language itself, not borrowed their sign language from other deaf communities during the recorded history of these languages.
theSe anD more aRe all pREsumed iSoLAtes oR SmaLl LoCal familieS, BeCause MaNy dEaf cOMmUnItieS Are mADe up of pEOple wHOse heArinG pARents dO nOt USe Sign LaNgUaGe, anD haVe manifeStlY, as ShowN by tHe lAngUagE iTsElf, not bOrroWed ThEir sigN lanGuage From othER dEAf comMunItiEs durIng tHe rEcOrDED hiSTOrY of theSe Languages.