Before revision: 320px|Graphical contents OPL: an example of the OPM language Object Process Methodology (OPM) is a conceptual modeling language and methodology for capturing knowledge and designing systems, specified as ISO/PAS 19450.
After revision: 320px|Graphical contents OPL: an example of the OPM language Object process methodology (OPM) is a conceptual modeling language and methodology for capturing knowledge and designing systems, specified as ISO/PAS 19450.