 The QL was bundled with an office suite, consisting of a word processor, spreadsheet, database, and business graphics written by Psion.Physically, the QL was the same black colour as the preceding ZX81 and Sinclair ZX Spectrum models, but introduced a new angular styling theme and keyboard design which would later be seen in the ZX Spectrum+.The QL used British Telecom type 631W plugs of similar design to British telephone sockets for serial cables except for QLs built by Samsung for export markets, which had DE-9 sockets.