question: What was it used for ?
answer: a seven-bit teleprinter code for American Telephone & Telegraph 's TWX ( TeletypeWriter eXchange ) network
turker_answer: It was used for a seven-bit teleprinter code for American Telephone & Telegraph 's TWX network .
rule-based: It was used for a seven-bit teleprinter code for American Telephone & Telegraph 's TWX ( TeletypeWriter eXchange ) network .