Abacus
3.6 Graphic program
In the last section the COLOR 1,0 statement returns the colors to their standard setting (white on a blue background). This portion is at the end of the program so that the text output appears in the standard color settings after the program runs. With four vertices the program defines the white side panel of the cube. Thus, the imaginary light source stands to the very right of the cube. Again, the four corners are offset, creating the illusion of perspective. You may want to experiment further with these statements before continuing to the next problem.
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