id_stencil.add_stencil (arrowhead.translated (p2));
id_stencil.add_stencil (number_stc->translated (num_off));
// use a lighter shade of blue so it will remain legible on black background.
id_stencil.add_stencil (arrowhead.translated (p2));
id_stencil.add_stencil (number_stc->translated (num_off));
// use a lighter shade of blue so it will remain legible on black background.