11. A system comprising: a memory to store a graphical reference image for a rendered character, the graphical reference image was produced by a source known to produce correct images; a display device, coupled to the memory, the display device providing a bitmapped display screen to present the graphical reference image and the rendered character produced by a text rendering engine being tested to facilitate a visual comparison between a visual representation of the graphical reference image produced by the source known to produce correct images and a visual representation of the rendered character produced by the text rendering engine to be tested; and a processor, coupled to the memory and the display device, to receive user input indicating user evaluation of the graphical reference image and the rendered character, the user evaluation being based on the comparison between the visual representation of the graphical reference image and the visual representation of the rendered character, the user evaluation identifying one or more differences between the graphical reference image produced by the source known to produce correct images and the rendered character produced by the text rendering engine to be tested, and to store the user evaluation in a database for subsequent debugging of the text rendering engine.
11. A system comprising: a memory to store a graphical reference image for a rendered character, the graphical reference image was produced by a source known to produce correct images; a display device, coupled to the memory, the display device providing a bitmapped display screen to present the graphical reference image and the rendered character produced by a text rendering engine being tested to facilitate a visual comparison between a visual representation of the graphical reference image produced by the source known to produce correct images and a visual representation of the rendered character produced by the text rendering engine to be tested; and a processor, coupled to the memory and the display device, to receive user input indicating user evaluation of the graphical reference image and the rendered character, the user evaluation being based on the comparison between the visual representation of the graphical reference image and the visual representation of the rendered character, the user evaluation identifying one or more differences between the graphical reference image produced by the source known to produce correct images and the rendered character produced by the text rendering engine to be tested, and to store the user evaluation in a database for subsequent debugging of the text rendering engine. 12. The system of claim 11 wherein: the bitmapped display screen is to further present an array containing a plurality of rows, each row including an indexing aid, a graphical reference image and a rendered character, on the bitmapped display screen; and the processor is to collect an evaluation of the graphical reference image and the rendered character on each row, and to store the evaluations in the database.