Open Programming Language

Open Programming Language, usually shortened to OPL, is a programming language for embedded systems and mobile devices running the EPOC and Symbian operating systems. It began as the Organiser Programming Language, written by the British company Psion for the Psion Organiser and designed by Colly Myers, with the first version implemented by Richard Harrison and Martin Stamp. The first implementation, without graphics, shipped with the original Psion Organiser in 1984 and came bundled with the science, finance and math data packs. It became widely accessible as built-in software on the Psion Organiser II in 1986 and was carried on to the Psion Series 3 and later handhelds, and onto some Nokia Communicator and Sony Ericsson phones. OPL is an interpreted, structured language similar to BASIC, whose programs are built from procedures. After Psion left the personal digital assistant market, the Symbian developer program released the language as open source, and it is now maintained in the opl-dev project on SourceForge.