PMPro contains a Prolog language interpreter which has been embedded in custom products for several years. Now, this Prolog is available to OS/2 users and developers with a Presentation Manager user interface and an easily embeddable inference engine. It gives you very powerful and simple access to the advanced features of OS/2.

Among PMPro Prolog's many features are:

• A full suite of Prolog standard predicates.
• Extensive context-sensitive help system.
• Drag-drop consultation and reconsultation of files.
• Example programs you can run, trace and modify immediately.
• OS/2 drag and drop integration for window colours and fonts.
• Prolog Code file type template and associations.
• A graphical user interface with response, trace, and debug windows, and a dialog window which saves all previous queries for fast re-submission.
• Automatic inter-session memory of window options and placement.
• Simple logging of interactive sessions (useful to certify testing of predicates under development).
• Mathematical operators enhanced for vector operations.
• Additional predicates for basic statistical and trigonometric operations.
• Real-number math.
• Fully 32-bit implementation.
• Inference engine and response daemon communicate through named pipes which are easily specified as program parameters. OS/2 multitasking is thus exploited to provide responsive user interaction as well as simplicity and flexibility when embedding the engine.
• User interface and engine can reside on separate machines in any network with OS/2 named pipe support.
• Access to OS/2 extended file attributes from rules.
• Ability to launch programs and sessions from rules.
• Ability to load third-party DLLs and call their entry points from within rules.
• Direct access to OS/2 Multimedia capabilities from within rules.