(原始内容存档于2015-12-14). World FastDraw Association (页面存档备份,存于互联网档案馆) resource page, includes video instructions for loading blank cartridges for FastDraw Definition of
is return x - floor(x) function rfpart(x) is return 1 - fpart(x) function drawLine(x0,y0,x1,y1) is boolean steep := abs(y1 - y0) > abs(x1 - x0) if steep