built-in patterns characters black dark gray code iron
BBS ASCII ART
https://en.wikipedia.org/wiki/ANSI_art
https://www.ptt.cc/man/asciiart/index.html
ascii gray characters code ART pixel
Ascii-canvas simulates a code page 437 ASCII terminal display. It supports all 256 characters of codepage 437, arbitrary foreground colors, arbitrary background colors, and arbitrary terminal sizes.
https://blog.jverkamp.com/2013/03/28/writing-a-roguelike-in-racket-day-0/
code page 437 ASCII
https://en.wikipedia.org/wiki/Color_depth
https://en.wikipedia.org/wiki/Microsoft_Paint
https://en.wikipedia.org/wiki/Code_page_437
Graphics Programming in Icon Ralph E. Griswold Clinton L. Jeffery Gregg M. Townsend
netscape gws gifa
suxp
