#ifndef lintstatic	char sccsid[] = "@(#)line.c 1.1 92/07/30 SMI"; /* from UCB 4.1 6/27/83 */#endifextern vti;extern xnow,ynow;line(x0,y0,x1,y1){	struct{char x,c; int x0,y0,x1,y1;} p;	p.c = 3;	p.x0 = xsc(x0);	p.y0 = ysc(y0);	p.x1 = xnow = xsc(x1);	p.y1 = ynow = ysc(y1);	write(vti,&p.c,9);}cont(x0,y0){	line(xnow,ynow,xsc(x0),ysc(y0));	return;}