It's true, the staff at AllAboutSymbian do love OPL (and Python, but that's another story for Jim to tell!). Presenting HexView for the Nokia 9300/9500, a full hexadecimal file viewer/editor. Steve Litchfield needed the tool at 7.30pm and asked Psion Series 5 author John Boyce if he could send over his old (1997) Psion OPL hex-editing code. John said yes and (despite the technical nature of the app) it took a grand total of one hour to massage it into a working Communicator application. Now that's what I call portable source code. You can download Hexview here and read more about OPL here.