BBS ASCII ART

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