Just realized you cannot see some lines, let me type them for you. I'm not typing out line 16 because it is not important, it just prints out coordinates. Line 23: COL%=GSPOIT(ROUND(ABS(X)+.5)/SCALE+(399/2)/SCALE+U*16,ROUND(ABS(Y))+.5)/SCALE+(239/2)/SCALE+V*16)