Labels:bulletin board | dialog box | sky | web site | window OCR: program Iraws patterns y iterating the formu sign(x) sort ebsl - c y Mor: informetion .cen be found in the Comoute Recreatons column the September 1986 issue Scientific American redits Macintosh version: John W Peterson Based on the Suntools program by Matt Goheen Writte n Thint Formula bv Barry Martin TransSkel routines by Pau Du Bois 1987 199 John W Peterson Mav be re-distribu ted, nor solo Computer Recre ations Written Think Paul 1991