Psion OPO/OPA

OPO (OPL Object, Psion OPL Output) is an executable format used on Psion PDA devices. OPO files are usually created by compiling programs written in the OPL programming language.

There is an OPA variant format, which can also contain embedded resource files.

See also Psion IMG.

Identification
OPO files begin with the ASCII signature " ".

Specifications

 * http://www.davros.org/psion/psionics/opo.fmt

Software

 * http://www.project-atlantis.co.uk/download.html → OPL Info (OPO executable that displays information about OPO executables)

Sample files

 * http://cd.textfiles.com/pdasoftware/PSION/ ...