k3d/share/shaders/k3d_graphic_lines.sl:101:	float y_highlight;
k3d/share/shaders/k3d_graphic_lines.sl:120:	{y_highlight=ycomp(Psh_highlight);
k3d/share/shaders/k3d_graphic_lines.sl:121:		y_highlight*=line_scale_highlight*line_scale_master;
k3d/share/shaders/k3d_graphic_lines.sl:122:		tt_highlight=mod(y_highlight,1);
