From Forum Nokia Wiki

OPL is an interpreted programming language similar to BASIC and purpose-built for Symbian OS.

OPL language is available on some Symbian platform :

• UIQ
• S80 version
• S60 (alpha version for 1st and 2nd edition )

You can found on OSymbian a little extension for adding some dialog and one way to enter data because on S60 there's nothing to do it.

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