TRACE(("...AddToDraw %d points\n", nplot));
AddToDraw(int x1, int y1, int x2, int y2){    register TScreen *screen = &term->screen;    register XSegment *lp;    if (nplot >= MAX_PTS) {	TekFlush();    }    lp = line_pt++;    lp->x1 = x1 = (int) (x1 * TekScale(screen) + screen->border);    lp->y1 = y1 = (int) ((TEKHEIGHT + TEKTOPPAD - y1) * TekScale(screen) +			 screen->border);    lp->x2 = x2 = (int) (x2 * TekScale(screen) + screen->border);    lp->y2 = y2 = (int) ((TEKHEIGHT + TEKTOPPAD - y2) * TekScale(screen) +			 screen->border);    nplot++;}