Mac OS is hīred biliþwealdbǣrra weorcendebyrdnessa þā sind worhta fram Apple Inc. for heora Macintosh tēame spearctellenda. Sēo ǣreste fadung wæs sēo namlēase weorcendebyrdness þe wæs on þǣm forman Macintosh spearctellende - man hēht hit System weorcwrithyrst lā. Man sægþ þe þis dyde biliþweald folclīc.