gfx_line(im,
xtr(im, im->gdes[i].xrule), im->yorigin,
xtr(im, im->gdes[i].xrule),
im->yorigin - im->ysize, 1.0, im->gdes[i].col);
gfx_line(im,
xtr(im, im->gdes[i].xrule), im->yorigin,
xtr(im, im->gdes[i].xrule),
im->yorigin - im->ysize, 1.0, im->gdes[i].col);