An early, full-featured Macintosh paint program from Apple's Claris subsidiary that was originally developed by Apple and bundled with every Mac up until the Mac Plus. MacPaint's bitmap-based PICT file format was used for printing the screen. By pressing Command-shift-3, the current screen was stored in a PICT file for printing either in MacPaint or another program. MacPaint was significant because its ease of use and often entertaining results showed a novice audience what a GUI-based system could do.