DEC operating systems (OS/8, RT-11, RSX-11, RSTS, TOPS-10, etc.) used both characters to mark the end of a line so that the console device (originally Teletype machines) would work.
dˌiːˌiːsˈiː ˈɑːpɚɹˌeɪɾɪŋ sˈɪstəmz ˌoʊˈɛs slˈæʃ ˈeɪt, ˌɑːɹtˈiː ɪlˈɛvən, ˌɑːɹɹˌɛsˈɛks ɪlˈɛvən, ˌɑːɹɹˌɛstˌiːˈɛs, tˈɑːps tˈɛn, ɛtsˈɛtɹə.jˈuːzd bˈoʊθ kˈæɹɪktɚz tə mˈɑːɹk ðɪ ˈɛnd əvə lˈaɪn sˌoʊ ðætðə kˈɑːnsoʊl dɪvˈaɪs ɚɹˈɪdʒɪnəli tˈɛlᵻtˌaɪp məʃˈiːnz wʊd wˈɜːk.