General MIDI:A synthesizer specification created by the MIDI Manufacturers Association (MMA) –defining a common configuration and set of capabilities for consumer MIDI synthesizers.
geometric pen:A pen with dimensions that are specified in world units. A geometric pen may possess attributes normally associated with a brush: such as a pattern and a hatch
graphics engine:A dynamic-link library which processes graphics function-calls from a Windows application and passes those calls to the appropriate device driver.