TI-83/84 Plus BASIC Graphics Programs (Drawing) - ticalc.org
: It includes advanced options like APD (Automatic Power Down) management directly on the menu, a feature not commonly found in competing graphics programs. Sketch 83
"Sketch 83" refers to a highly-rated designed for drawing and image management on graphing calculators. Review: Sketch 83 Graphics System TI-83/84 Plus BASIC Graphics Programs (Drawing) - ticalc