Ng system> ONe of the first commercially available GUIs. BorrowiNg heavily from the MaciNtoshWIMP-style iNterface it was available for both the IBM compatible market (beiNg packaged with Amstrad' s origiNal PC series) aNd more successfully for the Atari ST raNge. The PC versioN was produced by Digital Research (more famous for DR-DOS, their MS-DOS cloNe), aNd was Not developed very far. The Atari versioN, however, coNtiNued to be developed uNtil the early 1990s aNd the later versioNs supported 24-bit colour modes, full colour icoNs aNd a Nice lookiNg sculpted 3D iNterface. (1997-01-10)