Sketch 83 is widely regarded as one of the fastest and most comprehensive graphics systems available for the TI-83 series. It functions as a robust "graphic design system" within the constraints of calculator hardware.
TI-83/84 Plus BASIC Graphics Programs (Drawing) - ticalc.org
"Sketch 83" refers to a highly-rated designed for drawing and image management on graphing calculators. Review: Sketch 83 Graphics System
