Open Programming Language

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The Open Programming Language ( OPL , formerly Organizer Programming Language ) is a programming language for the Symbian OS operating system , as found on the Nokia Communicator and other mobile phones . The language was originally developed by Psion as Organizer Programming Language for Organizer II (1986) and used for the company's other PDAs . After Psion withdrew from the PDA market, the project was continued as open source and the acronym was reinterpreted. The language is now being further developed on SourceForge by the opl-dev project . Psion Teklogix now has a version for the Windows CE operating system .

OPL is based on BASIC . Here is a little hello world program :

PROC main:
  PRINT "Hello World"
  PAUSE 40
ENDP

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